SnowEx HELIXX User manual

June 1, 2022
Lit. No. 31025, Rev. 00
HELIXX™ Stainless Steel
Hopper Spreader
0.7 yd³ for Half-Ton Trucks
Installation Instructions
A DIVISION OF DOUGLAS DYNAMICS, LLC
CAUTION
Read this document before installing
or operating the spreader.
These Installation Instructions are for HELIXX Stainless Steel Hopper Spreaders
with serial numbers beginning with 200706 and higher.

Lit. No. 31025, Rev. 00 2 June 1, 2022
SAFETY DEFINITIONS
NOTE: Indicates a situation or action that can lead
to damage to your spreader and vehicle or other
property. Other useful information can also be
described.
SAFETY
WARNING/CAUTION LABELS
Become familiar with and inform users about the
warning and caution labels on the spreader.
NOTE: If labels are missing or cannot be read, see
your sales outlet.
CAUTION
Indicates a potentially hazardous situation
that, if not avoided, may result in minor or
moderate injury. It may also be used to alert
against unsafe practices.
WARNING
Indicates a potentially hazardous situation
that, if not avoided, could result in death or
serious personal injury.
30917EN.00
WARNING
No Step
Slippery surface when wet.
Falls may cause severe
injury.

Lit. No. 31025, Rev. 00 3 June 1, 2022
SAFETY
WARNING/CAUTION LABELS continued

Lit. No. 31025, Rev. 00 4 June 1, 2022
SAFETY
SAFETY PRECAUTIONS
Improper installation and operation could cause
personal injury and/or equipment and property
damage. Read and understand labels and the
Owner's Manual before installing, operating, or
making adjustments.
WARNING
• Driver to keep bystanders minimum of 25 feet
(7.62 m) away from operating spreader.
• Before working with the spreader, secure all
loose-tting clothing and unrestrained hair.
• Before operating the spreader, verify that all
safety guards are in place.
• Before servicing the spreader, wait for
conveyor, auger, and spinner to stop.
• Do not climb into or ride on spreader.
WARNING
Do not install the control for this product in
the deployment path of an air bag. Refer to
vehicle manufacturer's manual for air bag
deployment area(s).
CAUTION
If rear directional, CHMSL light, or brake
stoplights are obstructed by the spreader, the
lights shall be relocated, or auxiliary directional
or brake stoplights shall be installed.
CAUTION
During the hopper installation we recommend
the addition of an OSHA compliant Backup
Alarm. This alarm is required for OSHA
governed employers.
CAUTION
Disconnect electric and/or hydraulic power
and tag out if required before servicing or
performing maintenance.
NOTE: Lubricate grease ttings after each use.
Use a good quality multipurpose grease.
CAUTION
• Do not operate a spreader in need of
maintenance.
• Before operating the spreader, reassemble
any parts or hardware removed for cleaning
or adjusting.
• Before operating the spreader, remove
materials such as cleaning rags, brushes,
and hand tools from the spreader.
• Before operating the spreader, read the
engine owner's manual, if so equipped.
• While operating the spreader, use auxiliary
warning lights, except when prohibited by law.
• Tighten all fasteners according to the
torque chart. Refer to torque chart for the
recommended torque values.
WARNING
Vehicles <10,000 lb GVWR: Obstructing the
visibility from the vehicle's rear camera could
result in serious injury or damage. An auxiliary
camera system shall be installed if the
vehicle's rear camera is removed or blocked.
CAUTION
DO NOT leave unused material in hopper.
Material can freeze or solidify, causing unit to not
work properly. Empty and clean after each use.
WARNING
Do not exceed GVWR, GAWR, or maximum
vehicle load capacity, including the spreader
and ballast. See Loading section to determine
maximum volumes of spreading material.

Lit. No. 31025, Rev. 00 5 June 1, 2022
SAFETY
FUSES
The electrical system contains several automotive‑style
fuses. If a problem should occur and fuse replacement
is necessary, the replacement fuse must be of the
same type and amperage rating as the original.
Installing a fuse with a higher rating can damage the
system and could start a re. Fuse Replacement,
including fuse ratings and locations, is located in the
Maintenance section of the Owner's Manual.
PERSONAL SAFETY
• Remove ignition key and put the vehicle in PARK
or in gear to prevent others from starting the
vehicle during installation or service.
• Wear only snug-tting clothing while working on
your vehicle or spreader.
• Do not wear jewelry or a necktie, and secure long
hair.
• Wear safety goggles to protect your eyes from
battery acid, gasoline, dirt, and dust.
• Avoid touching hot surfaces such as the engine,
radiator, hoses, and exhaust pipes.
• Always have a re extinguisher rated BC handy,
for ammable liquids and electrical res.
FIRE AND EXPLOSION
Be careful when using gasoline. Do not use gasoline
to clean parts. Store only in approved containers away
from sources of heat or ame.
WARNING
Gasoline is highly ammable and gasoline
vapor is explosive. Never smoke while
working on vehicle. Keep all open ames
away from gasoline tank and lines. Wipe up
any spilled gasoline immediately.
CELL PHONES
A driver's rst responsibility is the safe operation of
the vehicle. The most important thing you can do
to prevent a crash is to avoid distractions and pay
attention to the road. Wait until it is safe to operate
mobile communication equipment such as cell phones,
text messaging devices, pagers, or two‑way radios.
VENTILATION
BATTERY SAFETY
NOISE
Airborne noise emission during use is below 70 dB(A)
for the spreader operator.
VIBRATION
Operating spreader vibration does not exceed 2.5 m/s2
to the hand‑arm or 0.5 m/s2to the whole body.
CAUTION
Batteries normally produce explosive gases
which can cause personal injury. Therefore,
do not allow ames, sparks, or lit tobacco
to come near the battery. When charging or
working near a battery, always cover your
face and protect your eyes, and also provide
ventilation.
• Batteries contain sulfuric acid, which burns
skin, eyes, and clothing.
• Disconnect the battery before removing or
replacing any electrical components.
WARNING
Vehicle exhaust contains lethal fumes. Breathing
these fumes, even in low concentrations,
can cause death. Never operate a vehicle in
an enclosed area without venting exhaust to
the outside.

Lit. No. 31025, Rev. 00 6 June 1, 2022
SAFETY
TORQUE CHART
1/4-20 10
91
54
1/4-28 12
11
71
5/16-1
81
50 212
5/16-2
41
70 240
3/8-16 269 376
3/8-24 29
74
20
7/16-1442
96
06
7/16-20
9/16-12
9/16-18
5/8-11
5/8-18
3/4-10
3/4-16
7/8-9
7/8-14 47
46
69
64
49
091-8
1-12 70
49
95
1/2-13
1/2-20
11.9
13.7
24.6
27.3
43.6
26.9
53.3
93
148
49.4
69.8
77.9
106.4
120.0
8.4
9.7
17.4
19.2
30.8
35.0
49.4
55.2
75.3
85.0
M6 x 1.00
M12 x 1.75
M8 x 1.25
M14 x 2.00
M10 x 1.50
M27 x 3.00
M22 x 2.50
M30 x 3.50
M24 x 3.00
M20 x 2.5011.1
19.5
38.5
67
107
7.7
613
778
1139
1545
450
428
562
796
1117
M33 x 3.50
M36 x 4.00
2101
2701
1468
1952
325
M16 x 2.00 231167
M18 x 2.50 318222
Recommended Fastener Torque Chart
Size Size
Torque (ft-lb)
Grade
5
Grade
8
Metric Fasteners Class 8.8 and 10.9
These torque values apply to fasteners
except those noted in the instructions.
Torque (ft-lb)
Grade
5
Grade
8
Size Size
Torque (ft-lb)
Class
8.8
Class
10.9
Torque (ft-lb)
Class
8.8
Class
10.9
Inch Fasteners Grade 5 and Grade 8
CAUTION
Read instructions before assembling.
Fasteners should be nger tight until instructed
to tighten according to the torque chart.
Use standard methods and practices when
attaching spreader, including proper personal
protective safety equipment.

Lit. No. 31025, Rev. 00 7 June 1, 2022
These Installation Instructions cover vehicles that
have been recommended for carrying the hopper
spreader. Please see your local dealer for proper
vehicle applications.
LOADING
WARNING
New untitled vehicle installation of a spreader
requires National Highway Tra󰀩c Safety
Administration altered vehicle certication
labeling. Installer to verify that struck load of
snow or ice control material does not exceed
GVWR or GAWR rating label and complies
with FMVSS.
MATERIAL WEIGHTS
Density
Material (lb/ft3)(lb/yd3)(kg/m3)
Salt 80 2160 1282
Sand 100 2700 1602
Material densities are approximate and are based on dry,
loose material. It is the responsibility of the operator to
know the weight of the material to be spread and the vehicle
carrying capacity.
CERTIFICATION
CAUTION
Never use wet materials or materials with
foreign debris with any of these spreaders.
These units are designed to handle dry, clean,
free-owing material.
CAUTION
Read and adhere to manufacturer's
ice-control material package labeling,
including Safety Data Sheet requirements.
WARNING
Do not exceed GVWR, GAWR, or maximum
vehicle load capacity, including the spreader
and ballast.
SPREADER SPECIFICATIONS
Hopper
Model
Overall
Length
Bed
Length
Empty
Weight
Overall
Width
Bed
Height
Capacity
Struck
0.7 yd³ 82 in (208 cm) 54 in (137 cm) 337 lb (153 kg) 43 in (109 cm) 27.5 in (70 cm) 0.7 yd³(0.54 m³)

Lit. No. 31025, Rev. 00 8 June 1, 2022
LOADING
DETERMINING VEHICLE PAYLOAD
1. Install the hopper spreader and optional
equipment according to the Installation
Instructions.
2. Install or attach any other equipment that will be
on the vehicle while the hopper spreader will be in
use (step bumper, trailer hitch, snowplows, etc.).
Fill fuel tanks.
3. Obtain the Gross Vehicle Weight Rating (GVWR),
Front Gross Axle Weight Rating (FGAWR), and
Rear Gross Axle Weight Rating (RGAWR) from
the certication label located inside the driver-side
door jamb or door.
4. With the occupants in the vehicle for normal
hopper spreader operation, weigh the vehicle to
obtain gross vehicle weight (GVW).
5. Subtract the GVW from the GVWR to determine
the available material payload.
6. Obtain the weight per cubic yard (lb/yd3) or cubic
meter (kg/m3) of the desired material. Divide the
weight into the payload to determine the maximum
volume of material that can be carried.
7. Refer to the Load Volume table and diagrams to
determine the maximum ll level for the material.
8. Fill the hopper with material to the calculated level.
Reweigh the vehicle with occupants and verify that
the Loaded Gross Vehicle Weight, Front Gross
Axle Weight, and Rear Gross Axle Weight are less
than the vehicle's ratings.
9. Repeat Steps 6–8 for each type of material.
The worksheet for Determining Vehicle Payload (next
page) includes an example.
WARNING
Overloading could result in an accident or
damage. Do not exceed GVWR or GAWR
ratings as found on the driver-side door
cornerpost of the vehicle. See Loading
section to determine maximum volumes of
spreading material.
Hopper
Model
Load Volume (yd3)
ABCD
0.7 yd³
0.85 0.7 0.4 0.06
Load Volume (m3)
ABCD
0.65 0.54 0.31 0.05
LOAD VOLUME
A
B
C
D
A: Rounded Load
B: Struck Load
C: Third Bump
D: Second Bump

Lit. No. 31025, Rev. 00 9 June 1, 2022
LOADING
Determining Vehicle Payload Worksheet
Material Type Example:
Dry Salt
AEquipment installed when
vehicle was weighed 0.7 yd3Hopper Spreader
BFront Gross Axle Weight
Rating [FGAWR] 6000 lb (2722 kg)
CRear Gross Axle Weight
Rating [RGAWR] 7000 lb (3175 kg)
DGross Vehicle Weight
Rating [GVWR] 11,000 lb (4990 kg)
EGross Vehicle Weight [GVW],
empty – 7402 (3358 kg)
FPayload Available = 3598 lb (1632 kg)
GMaterial Density ÷ 2160 lb/yd3(1282 kg/m3)
HMaximum Volume = 1.67 yd3(1.27 m3)
I
Maximum Material Fill Level,
approx. Refer to Load Volume
table and diagrams.
A
J
Loaded Front Gross Axle
Weight (lb/kg) Must be less than
weight in Row B.
K
Loaded Rear Gross Axle
Weight (lb/kg) Must be less than
weight in Row C.
L
Loaded Gross Vehicle Weight
[GVW] (lb/kg) Must be less than
weight in Row D.

Lit. No. 31025, Rev. 00 10 June 1, 2022
UNPACKING THE SPREADER
REMOVE SHIPPING BRACKETS AND
LOCATE COMPONENTS
The spreader is shipped from the factory with its
components secured inside the hopper and the top
screen in place. Before installing the spreader, remove the
shipping brackets and top screen, and locate components.
1. Take o󰀨 the top screen by removing the 3/8" anged
cap screws and the top screen brackets. Set the
screen and all fasteners aside for reinstallation.
2. Inside the hopper, remove the 3/8" steel cap screws
from the four shipping brackets (two on each side) that
secure the chute enclosure and the spinner deector
assembly to the hopper for shipment. Set the chute
enclosure and spinner deector assembly aside, and
discard the brackets and hardware.
3. Immediately install the six supplied 3/8" stainless steel
anged cap screws from the parts bag to fasten the
hopper body to the drivetrain.
CHUTE ASSEMBLY
1. Install four of the provided 3/8" stainless steel
anged cap screws through the spinner guard
holes into the rivnuts on the chute enclosure.
2. Remove and retain the cable boot bracket, dust
cover, and fasteners. Install the left and right side
chute pin ears to the chute enclosure with six
provided 3/8" anged stainless steel cap screws.
Reinstall the cable boot bracket and dust cover.
3. Set chute aside for installation after the spreader has
been installed on the vehicle.
Left-Side
Chute Pin Ear
Spinner Guard
Right-Side
Chute Pin Ear
3/8" Flanged
Cap Screws
Remove brackets.

Lit. No. 31025, Rev. 00 11 June 1, 2022
MOUNTING THE SPREADER
INSTALL HOPPER IN VEHICLE BED
NOTE: Periodically throughout the snow and ice
control season, verify that mounting devices
are secure.
1. Remove the vehicle tailgate.
2. Remove the wood shipping rails from the hopper legs.
3. Using slings or chains, lift the spreader by all four
diagonal corner rails and move it into the vehicle bed.
4. Center the spreader from side to side. Shift the
spreader forward or backward to a position that
will allow the chute, once installed, to overhang
the rear of the vehicle and the bumper. With two
people, trial-t the chute to check for clearance.
5. Use the holes in the four hopper support legs as
a template to mark mounting hole positions on the
vehicle bed.
6. Move the spreader temporarily to allow access,
and drill 5/8" holes as marked.
NOTE: Pay special attention when drilling or
clamping dissimilar metals to aluminum bodies.
Galvanic corrosion can occur if not handled
properly. Contact vehicle manufacturer for
recommended attachment practices.
CAUTION
Before lifting, verify that the hopper is empty
of material. The lifting device must be able to
support the spreader's weight as shown in
the Spreader Specications table.
CAUTION
Before drilling holes, check to be sure that no
vehicle wiring or other components could be
damaged.
Mounting Hole
Locations
Use all four rails
when lifting.

Lit. No. 31025, Rev. 00 12 June 1, 2022
MOUNTING THE SPREADER
WARNING
Spreader shall be bolted to vehicle frame.
Do not rely on the tie-down chains or straps
alone to hold spreader in vehicle.
1. Move the spreader back into position.
Secure the spreader to the vehicle with four
(installer-supplied) 5/8" Grade 5 cap screws as
required by the vehicle application, with 5/8" at
washers on both sides, and 5/8" locknuts.
If the mounting holes are not directly over the
vehicle box supports, the vehicle bed must
be braced to the frame to prevent buckling or
deforming the vehicle bed. Accessory mounting
bars are available for installations that require
additional bracing. Contact your authorized dealer.
2. Remove the cable tie holding the wire harness
to the conveyor chain. Connect the vehicle-side
harness to the hopper‑side harness.
3. Reinstall the top screen with the removed cap
screws and brackets.
Install Tie-Down Straps
Install tie‑down straps from the tie‑down loops on the
spreader body to the vehicle frame as shown. Use
one strap per loop, pulling diagonally away from the
hopper body.
Ratchet
Strap
Assembly
15°
Minimum
Vehicle
Tie Down
or Eyebolt

Lit. No. 31025, Rev. 00 13 June 1, 2022
MOUNTING THE SPREADER
Construct Sill Spacer
Measure the distance from the front end of the hopper
sill to the front of the vehicle bed and make a spacer
from 2" x 8" lumber to t that area.
Failure to install a spacer could result in damage
to the spreader.
18"
(46 cm)
Fit to vehicle.
Measured
distance.
18"
(46 cm)
Front of
Vehicle Bed
Measure distance.
Trough
End Cap
Spacer
Built to Fit

Lit. No. 31025, Rev. 00 14 June 1, 2022
TOP SCREENS & SPINNER DRIVE ASSEMBLY
INSTALL SPINNER DRIVE ASSEMBLY
NOTE: Complete the assembly installation in the
Chute Assembly section before proceeding with
these instructions.
1. Carefully set the spinner drive assembly on the
ground. Orient it in operating position as shown
below.
2. Attach the spinner drive assembly to the spreader
with the lock pins from the parts box. Install the
upper lock pin rst.
The upper lock pin goes through the lower chute
support holes and the upper chute pin ear holes.
The lower lock pin goes through the lower chute
pin ear holes and the chute support.
Secure each lock pin with a cotter pin.
3. Connect the spinner motor harness to the female
connector extending from the rear of the hopper.
Cotter
Pins
Lock
Pins
Chute
Supports
Female Connector
Spinner Drive Assembly

Lit. No. 31025, Rev. 00 15 June 1, 2022
WIRING AND HARNESS INSTRUCTIONS
Vehicle Battery Cable Installation
1. Before beginning this installation, remove the
battery cables from the vehicle battery.
2. Using the 1/4" x 3/4" cap screws, 1/4" at washers,
and 1/4" locknuts, mount the fuse holder near
the vehicle battery so that the 22" battery cable
can be installed from the POSITIVE (+) battery
terminal to the fuse holder. Install the fuse into the
fuse holder and hand tighten the nuts.
3. Attach one end of the 22" battery cable to the fuse
holder so that the ring terminal is on top of the
fuse. Replace the lock washer and nut.
4. Lay out a path for routing the vehicle battery cable
from the rear of the vehicle bed to the vehicle
battery. Make sure that the path avoids any hot,
sharp, or moving parts of the vehicle. Routing will
vary from vehicle to vehicle.
5. Route the vehicle battery cable as laid out in Step 4.
6. Using cable ties, secure the battery cable to
the vehicle. Verify that the harness cannot drop
onto the road when it is disconnected from the
spreader.
7. Attach the vehicle battery cable red wire to the
other fuse holder stud so that the ring terminal is
on top of the fuse. Replace the lock washer and
nut.
8. Torque the fuse holder nuts to 106–159 in‑lb and
snap the fuse holder cover into place.
9. Attach the other end of the 22" battery cable to
the POSITIVE (+) battery terminal.
10. Connect the positive battery cable to the
POSITIVE (+) battery terminal.
11. Connect the negative battery cable to the
NEGATIVE (–) battery terminal.
WIRING INSTRUCTIONS
Spreaders are shipped from the factory with the
spreader harness wired to the motor and spreader
module.
To properly wire the hopper spreader, follow this
recommended installation sequence:
1. Install the vehicle battery cable and control
harness included with the spreader, following the
steps given below.
2. Install the cab control as described under "Cab
Control Installation."
NOTE: Use dielectric grease on all electrical
connections.

Lit. No. 31025, Rev. 00 16 June 1, 2022
WIRING AND HARNESS INSTRUCTIONS
4. Drill a 5/8" hole in the re wall so that the vehicle
control harness can reach the desired cab control
location.
5. Insert a rubber grommet into the hole.
6. Route the harness as laid out in Step 2.
7. Secure the vehicle control harness to the vehicle.
8. Attach the red wire to a switched accessory circuit.
Vehicle Control Harness Installation
1. Plug the vehicle harness into the spreader harness.
2. Lay out a path for routing the vehicle control
harness from its attachment point on the vehicle
battery cable into the cab of the vehicle. Make
sure that the path avoids any hot, sharp, or moving
parts. Routing will vary from vehicle to vehicle.
3. Choose a cab control mounting location that can
be reached by the harness. The location must
be within easy reach of the vehicle operator
without restricting access to vehicle controls or
instrumentation.
Do not mount the control in areas prohibited
by the vehicle manufacturer for reasons of
crashworthiness. See the vehicle's body builder's
book, owner's manual, or service manual for
details. The shaded portions in the illustration
below show the most commonly restricted areas.
CAUTION
Before drilling any holes, check both sides
of the material for any wires, fuel lines, fuel
tanks, etc., that may be damaged by drilling.
CAUTION
Do not alter, modify, or install additional
components in shaded areas shown below.
Failure to comply may interfere with airbag
deployment or cause injury to operator in an
accident.

Lit. No. 31025, Rev. 00 17 June 1, 2022
Cab Control Installation
1. Conrm that the chosen cab control mounting
position will not interfere with other equipment or
allow unintentional starting of the spreader.
2. Install the vehicle side of the mounting bracket
using three #10 x 3/8" Phillips head tapping
screws.
3. Install the control side of the bracket to the control
using four #8 x 3/8" Phillips head machine screws.
Cont
rol Side
(C
ontrol not shown.)
Vehicle Side
#10 x 3/8"
Tapping
Screws
#8 x 3/
8"
Machin
e
Screws
WIRING AND HARNESS INSTRUCTIONS
(Control not shown.)
1/4" Nylon
Shoulder
Washer
1/4" Lock
Washer
1/4" Hex Nut
1/4" x 1/2"
Machine Screw
4. Install the control side of the bracket to the
vehicle side using 1/4" x 1/2" Phillips head
machine screws, 1/4" nylon shoulder washers,
1/4" lock washers, and 1/4" locknuts.
5. Plug the vehicle control harness into the cab control.
Harness Plug Cover
Install the supplied harness plug cover by slipping the
loop end of the cover over the harness plug.

Lit. No. 31025, Rev. 00 18 June 1, 2022
CENTER HIGH-MOUNTED STOPLIGHT
(CHMSL)
An LED center high‑mounted stoplight is standard
equipment on all HELIXX™ stainless steel hopper
spreaders.
The orange wire from the spreader vehicle harness
is for the CHMSL. Splice the orange wire into an
existing CHMSL circuit wire tap. Location of the tap
varies according to specic vehicle model, and may be
located either in the cab or in the rear of the vehicle.
Always use the tap provided by the OEM.
DO NOT splice the orange wire into the wire coming
o󰀨 the stoplight switch by the brake pedal. Splicing at
the stoplight switch may a󰀨ect transmission shifting,
cruise control, or other vehicle functions.
WIRING AND HARNESS INSTRUCTIONS
For vehicles with a tap along the frame rail or at
the rear cross member:
1. Cut the tape holding the orange wire where it exits
the convoluted tubing.
2. Pull out the orange wire to the location where the
vehicle CHMSL tap is located. Cut a small
V notch in the tubing for the wire to exit. Pull the
wire through the V notch and tape the tubing on
each side of the exit point.
3. Trim any excess length from the orange wire and
splice into the vehicle tap.
Coil and cable-tie the brown wire away from any hot,
sharp, or moving parts.

Lit. No. 31025, Rev. 00 19 June 1, 2022
3. At the passenger's side of the spreader, insert two
5/16" carriage bolts from the inside face of the
powergroup plate, through the plate, then through
the license plate bracket assembly. Secure each
fastener with a 5/16" locknut as shown.
4. Route the license plate light electrical lead through
a grommet on the electrical box.
INSTALL LICENSE PLATE
1. Using the two #10-32 x 5/8" screws and
#10‑32 locknuts, fasten the license plate light to
the bracket.
2. Using the two license plate screws and square
nuts, attach the license plate to the bracket and
license plate light.
Bracket
License Plate Light
License Plate
License Plate
Bracket
Assembly
Powergroup
Plate
INSTALL LICENSE PLATE

Lit. No. 31025, Rev. 00 20 June 1, 2022
Electrical Connections—Hopper Side
1. Locate the 2‑pin connector (brown and black
wire) on the spinner harness (PN 80101). Unplug
the connector from main harness and cut the
brown wire 2" back from the connector. Strip the
insulation so that approximately 1/4" of wire is
exposed on the plug side only.
2. Locate the black and white leads from the
license plate lamp. Strip the insulation so that
approximately 1/4" of wire is exposed.
3. Crimp the supplied ring terminal to the black wire
and cover it with heat shrink tubing.
4. Crimp the white wire from the plate light to the
brown wire on the spinner harness using the
supplied butt connector.
5. Connect the ring terminal to the NEGATIVE (–)
side of the isolation block.
6. Reconnect the 2‑pin connector of the spinner
harness to the main harness.
WIRING AND HARNESS INSTRUCTIONS
Electrical Connections—Vehicle Side
1. Locate a spot on the vehicle cable assembly
approximately 20" from the main molded
connector.
2. At this spot open the convoluted tubing that covers
the cable assembly and pull out the brown wire.
3. Splice the brown wire to the vehicle license plate
lamp or park lamp circuit.
INSTALL ACCESSORIES
To install any of the accessory kits that are available
for the HELIXX™ stainless steel hopper spreaders,
follow the instructions included with each kit.