Dakota Digital VHX-73C-PU User manual

Manual # 650371E
VHX-73C-PU
Dakota Digital VHX Instrument Installation
For 1973 - ‘87 Chevy & GMC Pickups (Includes Heavy-Duty Trucks Through 1991)
1973 - ’91 Chevy Blazer & GMC Jimmy
1973 - ’91 Chevy & GMC Suburban
Your new VHX-73C-PU kit includes:
(2) Turn Signal
Harnesses
CAT5 Cable
Universal
Sender Pack
Installation Manuals
VHX Display
Gear Indicator Lenses
(clear and blacked-out)
Switch Assembly
Control Box
Mounting Tabs
(4) 6-20 x ½” Pan
Head Screws
(2) 6-20 x ¾” Flat Head
Screws

Manual # 650371E
2. Fasten the three included mounting tabs to the VHX system.
Attach the tabs marked with “L” and “R” labels to the left and right sides of the speed and tach gauges
respectively. This will require the four included 6-20 x ½” pan head screws. Insert the screws into the
slots on the back side of the system, directly behind the mounting tabs. Partially tighten these screws
for now, do not fully torque them down yet.
The remaining unlabeled tab goes on the bottom left side of the system, between the satellite gauges.
Making sure the countersunk side of the tab is facing away from the rest of the unit, fasten this tab to
the VHX system with the two included 6-20 x ¾” flat head screws. This tab can be tightened until flush.
4. Attach the CAT5 cable to the VHX cluster and the two harnesses to use the stock blinker location if so
desired. This system comes with two options for the turn signals in your dash. You can either have arrows
located in the faceplate of your new VHX display, and/or arrows in your vehicle’s stock turn signal locations.
To use the new faceplate arrows, follow the wiring instructions for the turn signals found in the main VHX
manual.
1 of 2
3. Due to differences in bezels, there is some adjustability built in to the VHX system. Test fit the VHX display to
your bezel and align the top to the guides in the slots. When satisfied with the fitment, tighten the screws.
1. First, remove the 10 screws holding the bezel to the dash. Remove the stock instrument cluster, making
sure to retain the four original instrument cluster screws for mounting the Dakota Digital VHX system later.
Installation
“R” Tab
“L” Tab
Unlabeled Tab

Manual # 650371E
4a. To optionally use the stock turn signal arrows, do not wire the turn signals to the VHX control box. Instead,
use the two provided two-wire harnesses. The harnesses plug directly into connectors on the back side of
your new VHX system. Connect the wires from these harnesses to your turn signal circuit and ground as
shown below. Doing this will light green LED bulbs, located in the original locations of your dash panel, when
turn signals are active. Make sure to check left and right to verify they are wired correctly.
VHX system (top side view)
WHITE / BLACK
Connect to
CHASSIS GND
WHITE / GREEN
Connect to
LEFT
turn circuit
WHITE / BLACK
Connect to
CHASSIS GND
WHITE / GREEN
Connect to
RIGHT
turn circuit
LEFT connector RIGHT connector

Manual # 650371E
5. Carefully route the CAT5 cable through the dash to the control box mounting location and attach the VHX
display to the dash using the four screws removed in Step One (see black arrows below).
5a. If using the stock automatic gear selector: glue the supplied clear lens over the gear selector opening in the bezel and
mount the gear selector on the VHX dash using the two factory screws (white arrows in photo above). Route the pull
wire through the guide, just below the right-hand screw (black circle in photo above).
5b. If using the optional GSS-universal gear indicator: glue the dark lens over the gear selector opening.

Manual # 650371E
WARNING: This product can expose you to chemicals including lead, which is known to the State of
California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov
7. Refer to the main manual for wiring instructions to complete the VHX installation.
6. Install the stock bezel over the VHX gauge cluster using the stock screws removed in Step One. Tighten the
locations shown below (white arrows) first to ensure proper fitment and alignment; if the holes are not
aligned correctly, Step Three may need to be repeated.