AMP Research Install Part 2: Wiring Squarebody Truck / Any Classic Vehicle

This video documents the wiring for the AMP Research boards on the 1985 Chevy K10. This process should be similar for any classic vehicle without an OBDII port.
00:33 Review Wiring Diagram
04:58 Truck Wiring Overview
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[@ehenson99]

On my set I wired the door triggers onto the wires from those switches that go to the dome light. The problem was ground was backfeeding and operating both steps every time a door was opened. I had to wire up some diodes to prevent it from backfeeding through the dome light circuit to the other step. Your way was definetly smarter, lol.

[@midatlanticcustoms]

Good point, I should have noted this in the video. Thanks for bringing it up, definitely an important part of the wiring!

[@blackbox_1]

hi brother i have installed the amp power step in 84 blazer all it is good but not working ranning board the backfeeding i need the diagram for wiring harness switch doors thank you for interesting in this video

[@blackbox_1]

help me please

[@midatlanticcustoms]

Hey, not sure I'm following. Is your dome light back feeding through the step ground signal? There are two prongs on your door switch, you might need to move the ground for the step to the other prong.

[@blackbox_1]

hi brother how are you? thank you for interesting I want to know the brown wire that you connected to the purple wire, where does it begin and end?

[@midatlanticcustoms]

@@blackbox_1 the brown wire runs to the ignition switch and gives you a warning on your dash if you leave your key in the ignition with the door open

[@justme-bb4qt]

Since the obd is eliminated, any module will work with installing it this way?

[@midatlanticcustoms]

Yupp, it should. Triggering ground to the purple wires on any amp module we've encountered has worked

[@jedclampett6466]

Just my two cents.... I can't stand plastic split loom. Seems that all the power step manufacturers go this route. Over time it gets hard, flakes and falls apart. For the money they charge for these kits the customer needs to demand better....

[@midatlanticcustoms]

Agreed, it's cheap junk. Gets brittle and falls apart over time. A pain to work with. I'm planning to re-do my engine bay at some point and update all of it.