Maxon RA-45 Owner's manual

Page 1of 36 M-21-08 REV.B
Installation Supplement
M-21-08
REV. B
OCTOBER 2021
RA-45 INSTALLATION SUPPLEMENT
Domino’s Specification, 289905-01-200
General Notes:
•Use the standard RA installation manual for structural mounting instructions.
•Use this supplement for electrical installation and wiring.
•Make sure cables are protected from sharp edges with loom and grommets.
•Secure all cables and harnesses to prevent movement.
•Do not attach anything to the liftgate moving harness. Make all connections in Junction
Box.
©2021 MAXON Lift Corp
Junction Box
Main Switch
Center Cable Guide

Page 2of 36 M-21-08 REV.B
Installation Supplement
Installation Supplement
Substitution for STEP 3.1 in RA Installation Manual
Note: Main Control switch is pre-wired to Junction Box.
1. Connect batteries as shown below to allow running of the liftgate for installation positioning
before welding to trailer cross-members.
2. Install 150 A circuit breaker provided in Purkey’s Severe Service Charge Line kit in Liftgate
battery box as shown below.
INSTALL 150 A
CIRCUIT BREAKER
CONNECT 4 BATTERIES
AS SHOWN.
JUMPER CABLE
175 A CIRCUIT BREAKER
PRE-INSTALLED IN BAT. BOX
CONNECT JUMPER
CABLE TO BATTERY +12V

Page 3of 36 M-21-08 REV.B
Installation Supplement
Purkey’s Severe Service Charge Line Connections in Battery Box
INSTALL 150 A
CIRCUIT BREAKER
FROM PURKEY KIT
JUMPER CABLE
CONNECTS TO PUMP
ASSY SELECTOR
SWITCH
CONNECTS TO J-BOX
12V STUD TERMINAL
CONNECTS TO J-BOX
GROUND STUD
TERMINAL

Page 4of 36 M-21-08 REV.B
Installation Supplement
3. After fully welding the liftgate, disconnect +12v cables from selector switch to battery and
charge line in the battery box to remove power while making Junction Box connections.
4. Run loomed Purkey’s Severe Service Charge Lines from the nose of trailer to center Liftgate
Cable Guide. Route Charge Lines in Cable Guide towards Junction Box. Route under Liftgate
Channel to Junction Box as shown.
5. Remove Junction Box cover. Use a multimeter to confirm there is no power on the 3/8” red
terminal.
6. Remove the four screws and spacer tubes attaching the backing plate to Junction Box.
LIFTGATE CHANNEL
PURKEY’S SEVERE
SERVICE CHARGE LINES
CENTER LIFTGATE
CABLE GUIDE
REMOVE SCREWS
CORD GRIPS
JUNCTION BOX
3/8” RED TERMINAL
(CHARGE LINE)

Page 5of 36 M-21-08 REV.B
Installation Supplement
7. The backing plate can now be rotated to improve access to cord grips and wires.
8. Run Purkey Severe Service positive and negative charge lines through top two cord grips and
install into Junction Box. Crimp 2-gauge battery lugs onto cables and heat shrink. Connect
cables as shown below and tighten cord grip outer nuts to compress and seal grommet on
cables.
•Provide drip loop for all cables running into Junction Box.
LOOMED CABLES
PURKEY SEVERE SERVICE
POSITIVE AND NEGATIVE
CHARGE LINES
PROVIDE DRIP LOOP FOR
ALL CABLES RUNNING
INTO JUNCTION BOX.
PURKEY SEVERE SERVICE
POSITIVE CABLE
PURKEY SEVERE SERVICE
NEGATIVE CABLE

Page 6of 36 M-21-08 REV.B
Installation Supplement
9. Run loomed trailer DOME light wires (BLUE & WHITE) in Cable Guide towards Junction Box.
Route wires into Junction Box through a single cord grip grommet hole as shown below.
Crimp 3/8” ring terminal to the white wire. Heat shrink terminal and connect to 3/8”
ground stud. Crimp installer supplied fuse holder to the blue wire and connect to 3/8”
positive stud as shown below.
10. Run loomed trailer OVERHEAD PLATFORM LIGHT wires (BLUE & WHITE) in center Cable
Guide towards Junction Box. Route wires into Junction Box through the two cord grip
grommet holes shown below. Crimp 3/8” ring terminal to the white wire. Heat shrink
terminal and connect the white wire to 3/8” ground stud. Crimp fuse holder to the blue
wire and connect to terminal 9 as shown below.
•Tighten cord grip outer nut to compress and seal grommet on all four wires.
•Provide drip loop for all cables running into Junction Box.
BLUE WIRE
WHITE WIRE
BLUE WIRE BUTT CONNECTED
TO FUSE HOLDER TO TERMINAL
WHITE WIRE WITH 3/8” RING
TO 3/8” GROUND STUD
BLUE & WHITE WIRE THRU
SAME GROMMET HOLE
WHITE WIRE WITH 3/8”
RING TO 3/8” GROUND
BLUE WIRE BUTT CONNECTED
TO FUSE HOLDER TO TERMINAL
WITH 3/8” RING

Page 7of 36 M-21-08 REV.B
Installation Supplement
11. Run Purkey’s Direct Trail Charger Harness from the nose of the trailer to Center Liftgate
Cable Guide. Route Purkey’s Direct Trail Charger Harness in center Liftgate Cable Guide
towards Junction Box.
12. Route into Junction Box through single hole cord grip shown below. Cut approximately 6”
off the jacketed portion of the four-wire harness. Crimp and heat-shrink ring terminals to
wires and connect as shown below. Tighten cord grip outer nut to compress and seal
grommet to harness.
•Provide drip loop for all cables running into Junction Box.
YELLOW WIRE WITH #10 RING TO TERMINAL 1
ORANGE WIRE WITH #10 RING TO TERMINAL 2
BLACK WIRE WITH #10 RING TO TERMINAL 3
TRAIL CHARGER
HARNESS GROMMET
WHITE WIRE WITH 3/8” RING TO GROUND STUD

Page 8of 36 M-21-08 REV.B
Installation Supplement
13. Install wall switches, two outside and two inside, per customer specifications. Route all four
loomed Liftgate Wall Switches along cross members, through grommeted cross member
holes exiting at the center Liftgate Cable Guide. Secure switch cables to cross members as
shown. Route wall switch harnesses in center Cable Guide towards Junction Box.
NOTE: If MAX SOL Solar System is being installed, go to Addendum A (page 11)
for instructions on installing Solar Box and wall switch wiring. Continue with
step 14 if not installing MAX SOL Solar System.
14. Route 4 wall switch cables into Junction Box through the lower four-hole cord grip as shown
below.
•Reinstall backing plate to Junction Box with four screws and spacers removed in step 5.
•Cut off the excess cable. Cut approximately 4” off the jacketed portion of the three-wire
harness. Crimp and heat shrink #10 ring terminals to wires and connect as shown
below.
•Tighten cord grip outer nut to compress and seal grommets.
•Provide drip loop for all cables running into Junction Box.
WALL SWITCH WIRES
HARNESS GROMMET
#1 BLACK WIRE TO
TERMINAL #1 (UP)
#2 BLACK WIRE TO
TERMINAL #2 (DOWN)
YELLOW/GREEN WIRE TO
TERMINAL #8 (ALL SW)
WALL SWITCH CABLES

Page 9of 36 M-21-08 REV.B
Installation Supplement
15. Reconnect +12V cables to Liftgate battery and charge line that were disconnected in step 3.
•Check each switch for proper operation. If the switch function does not match the
switch decal, swap #1 wire and #2 wire for that switch.
16. Attach main switch bracket to trailer side rail as shown.
17. Check all switches and lights for correct operation.
Main switch – All functions (UP, DOWN, IN, OUT) work properly.
Exterior wall switches - All functions work properly, and operation matches switch decal.
Interior wall switches - All functions work properly, and operation matches switch decal.
Overhead platform light turns on when the platform is extended.
Red light on trailer front driver side corner post turns on when the platform is extended.
Overhead platform light turns off when the platform is fully stored.
Red light on trailer front driver side corner post is off when the platform is fully stored.
Interior dome lights turn on.
18. When all connections in Junction Box are complete and checked, spray terminal studs with a
conformal coating.
19. Reinstall Junction Box Cover.
POSITION RING TERMINALS FOR WALL
SWITCH WIRES AS SHOWN BELOW.

Page 10 of 36 M-21-08 REV.B
Installation Supplement
20. Trim 3/8” off lever plate on the right-hand side of lift frame to eliminate interference with
mud flap.
21. Install QR Code decal in 3 places
•Near 7-way nose box, front driver’s side of the trailer.
•On battery box cover, driver’s side of the trailer.
•Near the main switch, on the curbside of the trailer.
TRIM 3/8” OFF LEVER PLATE AS SHOWN
FRONT OF TRAILER,
NEAR 7-WAY
BATTERY BOX COVER
NEAR MAIN SWITCH,
CURBSIDE OF TRAILER
LEVER PLATE

Page 11 of 36 M-21-08 REV.B
Addendum A
Addendum A
MAX SOL add on Solar Box for Domino’s RA-45
Parts in Solar Box add-on kit
Item
Description
Qty
Where Used
1
Solar Box Assembly
1
Step 1. Solar Box to Lift Frame Channel.
2
Bolt, 3/8-16 x 1-1/2” GR8
2
Step 1. Solar Box to Lift Frame Channel.
3
Locknut, 3/8-16
2
Step 1. Solar Box to Lift Frame Channel.
4
Quick disconnect, ¼ male, fully insulated, red
1
Step 2. WAYPOINT to Charge Controller
5
Quick disconnect, ¼ female, fully insulated, red
1
Step 2. WAYPOINT to Charge Controller
6
Clip on barrel nut, ¼-20
4
Step 3. Charge Controller.
7
Bolt, ¼”-20 x ¾”
4
Step 4. Charge Controller to Solar Box.
8
Washer, ¼”
4
Step 4. Charge Controller to Solar Box.
9
Lock washer, ¼”
4
Step 4. Charge Controller to Solar Box.
10
Ring terminal, 3/8”, 18-22 ga.
2
Step 10. WAYPOINT to J-box
11
Ring terminal, 3/8”, 8 ga.
2
Step 11. Charge Controller B+, B- to J-Box
12
Ring terminal, #10, 18-22 ga.
3
Step 12. Wall switch harness to J-Box
1
2
3
4
5
6
7
8
9
10
11
12

Page 12 of 36 M-21-08 REV.B
Addendum A
1. Attach Solar Box to Liftgate Channel.
a. Position Solar Box 14” to the right of the liftgate Junction Box.
b. Using the Solar Box as a guide, drill two 3/8” holes into Liftgate Channel. Note: Liftgate
can be slid out approximately 24” to drill holes from the bottom of the Solar Box.
BOTTOM VIEW
c. Bolt Solar Box to liftgate channel with 3/8” x 1.5” grade bolts and locknuts. Tighten to
30 lb-ft.
2. If Solar Box contains an Optio3/WAYPOINT monitoring system, prepare Charge Controller to
connect to WAYPOINT.
•Cut off data connector on Charge Controller
14”
3/8” DRILLED HOLES
LIFTGATE CHANNEL
DATA CONNECTOR
SOLAR BOX
SOLAR BOX
JUNCTION BOX
LIFTGATE CHANNEL

Page 13 of 36 M-21-08 REV.B
Addendum A
•Remove 2 ½” of jacket portion off on the 4 wires. Cut off unused red and black wire.
•Strip 3/8” of insulation off the wire and crimp ¼” female insulated quick connect to the
yellow wire. Heat shrink terminal to wire.
•Strip 3/8” of insulation off the wire and crimp ¼” male insulated quick connect to the white
wire. Heat shrink terminal to wire.
3. Place 4 pcs of clip-on barrel nut onto Charge Controller as shown.
4. Install Charge Controller in Solar Box with four ¼”-20 x ¾” long bolts, ¼” washers, and ¼” lock
washers.
BOLT WITH LOCK WASHERS AND
WASHERS FROM BOTTOM OF
SOLAR BOX.
CLIP-ON BARREL NUTS
REMOVE 2 ½”
OF JACKET.
CUT UNUSED RED
AND BLACK WIRE.

Page 14 of 36 M-21-08 REV.B
Addendum A
5. Connect Charge Controller data wires to Optio3 WAYPOINT.
WHITE wire to BLUE wire and YELLOW wire to YELLOW wire.
6. Cut ring terminal ends off 3 ft long Charge Controller battery cables.
7. Route Charge Controller battery cables through rear grommets as shown. Connect fused B+
cable from Charge Controller to B+ battery cable. Connect B- cable from Charge Controller to B-
battery cable.
CUT RING TERMINALS
OFF END OF CABLE
CONNECT BATTERY CABLE
TO CHARGE CONTROLLER B+
CONNECT BATTERY CABLE
TO CHARGE CONTROLLER B-
OPTIO3 WAYPOINT CONNECTIONS

Page 15 of 36 M-21-08 REV.B
Addendum A
8. Follow MAX SOL installation instructions (M-20-17) only for mounting solar panel and routing
solar panel Home Run cables (PV+ and PV-) into Solar Box. All other MAX SOL connections are
covered in this Addendum. The solar panel Home Run cables will be routed in the Liftgate
Channel Guide to the Solar Box, as shown below.
9. Cut Home Run cables approximately 4” from the connector. Run solar panel Home Run cables
(PV+ and PV-) into Solar Box through the center cord grip holes as shown below. Insert cut end
of the cable through center cord grip and trim excess cable. Use the 8-gauge butt splices
provided to splice and heat shrink connector ends to trimmed Home Run cables.
SOLAR PANEL HOME RUN
CABLES FROM REAR OF TRAILER
RUN CABLES THROUGH
TOP TWO HOLES OF THE
CENTER CORD GRIP.
CENTER LIFTGATE
CABLE GUIDE

Page 16 of 36 M-21-08 REV.B
Addendum A
10. Route RED and BLACK wires from Optio3 WAYPOINT through cord grip in the Junction Box.
Crimp and heat shrink 3/8” ring terminals to wires and connect as shown below.
11. Route RED wire (B+) and BLACK wire (B-) from Charge Controller through cord grip in the
Junction Box. Crimp and heat shrink 3/8” ring terminals to wires and connect as shown below.
BLACK WIRE WITH 3/8” RING TO
3/8” GROUND STUD
RED WIRE WITH 3/8” RING TO
3/8” POSITIVE STUD
OPTIO3 WAYPOINT CABLE
THROUGH CORD GRIP
BLACK WIRE (B-)WITH 3/8” RING
TO 3/8” GROUND STUD
RED WIRE (B+) WITH 3/8” RING
TO 3/8” POSITIVE STUD
B+ AND B- FROM CHARGE
CONTROLLER THROUGH CORD GRIP
RED AND BLACK WIRE
FROM OPTIO3 WAYPOINT

Page 17 of 36 M-21-08 REV.B
Addendum A
12. Route 3 wire gray cable from Solar Box through cord grip in the Junction Box.
•Reinstall backing plate to Junction Box with four screws and spacers removed in step 5.
•Crimp and heat shrink #10 ring terminals to wires and connect as shown below.
13. Tighten cord grip outer nut to compress and seal grommets.
14. Provide drip loop for all cables running into the Junction Box.
15. Connect PV+ and PV- connectors in Solar Box to Charge Controller.
WALL SWITCH WIRES
HARNESS GROMMET
#1 BLACK WIRE TO
TERMINAL #1 (UP)
#2 BLACK WIRE TO
TERMINAL #2 (DOWN)
YELLOW/GREEN WIRE TO
TERMINAL #8 (ALL SW)
CONNECT PV+ AND PV- CABLES
TO CHARGE CONTROLLER

Page 18 of 36 M-21-08 REV.B
Addendum A
16. Route 4 wall switch cables into Solar Box through the lower four-hole cord grip as shown below.
•Cut off the excess switch harness. Cut approximately 4” off the jacketed portion of the
three-wire harness. Crimp and heat shrink #10 ring terminals to wires and connect as
shown below.
17. When all connections in Solar Box are complete and checked, spray terminal studs with a
conformal coating.
18. Tighten cord grip outer nut to compress and seal grommets.
19. Record Optio3 WAYPOINT S/N #, Trailer number, Liftgate Serial # and e-mail to
[email protected]
WAYPOINT S/N: Trailer #:
Liftgate Serial #:
4 WALL SWITCH CABLES
INTO SOLAR BOX
#1 BLACK WIRE TO
TERMINAL #1 (UP)
#2 BLACK WIRE TO
TERMINAL #2 (DOWN)
YELLOW/GREEN WIRE TO
TERMINAL #8 (ALL SW)
Optio3 WAYPOINT S/N

Page 19 of 36 M-21-08 REV.B
Addendum A
Verify Optio3 WAYPOINT Operation:
20. Confirm antenna connections are tight and connected as shown. The antenna wires are labeled
on the wire near the connector. The 4G/LTE antenna is on the terminal closest to the clear
Optio3 cover and the GPS antenna is on the terminal closest to the box bottom.
21. Check data connection to Solar Controller. Connections must match colors as shown below.
Yellow to Yellow and White to Blue.
22. Confirm that the BATT LED on the controller is solid green. Liftgate battery voltage should be
12.5V minimum while setting up the Optio3 WAYPOINT connections.
4G Antenna
GPS Antenna
Yellow to Yellow
White to Blue
Clear Optio3 cover
BATT indicator

Page 20 of 36 M-21-08 REV.B
Addendum A
23. Use a smartphone or tablet to connect to the Optio3 WAYPOINT Wi-Fi hotspot. Connect to the
Optio3 Waypoint Wi-Fi hotspot that matches Optio3 WAYPOINT serial number you are working
on. When you are connected, it will show “Connected without Internet.” You are now ready to
scan the small QR code labeled “Scan to run local tests.” If the QR code is difficult to scan, enter
http://192.170.4.1 directly into the web browser to access the local test webpage.
24. Select the link shown from scanning the QR code. It will open a webpage, as shown below.
25. When the webpage first opens, it will show the SITE STATUS as “Checking…”.When the SITE
STATUS shows the sites as “reachable,” the cellular connection is working correctly.
Note: Depending on the cellular coverage and position of the vehicle/antenna, the time to
connect will vary.
Connect to Optio3
Waypoint Wi-Fi Hotspot
Scan Optio3 Waypoint
small QR code.
“Scan to run local tests”
Cellular connection
working
Checking for
connection
Optio3 Waypoint Serial #