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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Ok, according to theory, (01 service manual...) The Red with Orange trace wires are the ground circuit for the high beams. (cavity C in the headlamp connectors....) With the headlights on, and high beams selected, you should see continuity to ground on that wire. If you don't, check the Black/Orange wire at the beam select switch, see if you have continuity to ground there. (gonna have to pull the column cover for that test.) Also test the light green wire for continuity to ground, also at the beam switch.
See the relevant part of the wiring diagram below. It's important to understand that the lighting works a little different from most other vehicles. Power comes from the PDC directly to the light bulbs. All the wiring shown below the headlamps connects to ground thus completing the circuit. With both light bulbs removed power does not reach that lower part, you can only test the lower part with an ohm meter (resistance to ground) or a test light. With low beams on the violet/white wire at the connector is grounded (already verified working), in the high beam setting the red/orange should connect to ground. If that's not the case follow the red/orange wiring.
Ok, according to theory, (01 service manual...) The Red with Orange trace wires are the ground circuit for the high beams. (cavity C in the headlamp connectors....) With the headlights on, and high beams selected, you should see continuity to ground on that wire. If you don't, check the Black/Orange wire at the beam select switch, see if you have continuity to ground there. (gonna have to pull the column cover for that test.) Also test the light green wire for continuity to ground, also at the beam switch.
are every one of these steps with the lights on and the switch connected?
Ok, according to theory, (01 service manual...) The Red with Orange trace wires are the ground circuit for the high beams. (cavity C in the headlamp connectors....) With the headlights on, and high beams selected, you should see continuity to ground on that wire. If you don't, check the Black/Orange wire at the beam select switch, see if you have continuity to ground there. (gonna have to pull the column cover for that test.) Also test the light green wire for continuity to ground, also at the beam switch.
so I have ZERO continuity with the headlights on or off at the cavity c on the plug, sorry I had to edit this response
Last edited by Silverram80; May 14, 2021 at 08:11 PM.
Makes it easier.
