Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer. Where on the truck are you tapping into the reverse and stop light wires?
You should have 12 volts right at the lights at the back of the truck. Recheck the voltage back at the lsmps again. I will look up the wire colors and tell you which is the stop and which is the backup.
No, they should be 12 volts. The back up wire is a White wire with a Red stripe, and the stop/turn is a White with a dark Green stripe (on the left lrear lamp). Recheck that and make sure your battery is charged and your voltmeter has a good ground.
If that is the case, then there is a problem with the lamp driver circuits in the TIPM (electronic fuse box under the hood) Those bulbs are 12 volts. Remeasure the voltage with the bulbs plugged in. There may not be enough load on the circuit if you just use your meter.
In other words, the TIPM will not provide full 12 volts if it does not see the proper load on the circuit. That is how it knows if a hulb is burnt out
Hello, have you had a chance to recheck the voltage with the bulb connected up? If there is still low voltage, then something is up with the TIPM. If there is now 12 volts, then connect your wires at the lamp connector.
Well that's a start at least. What do the front sensors need to see in order for them to be "active"?
Ok got it. Let me look at the wiring diagram and see where else you can tap into for that brale signal. Will get back to you asap.
Ok, after extensive research I have decided that the best place to tap into the 12 volt brake lamp feed is at the BCM (Body Control Module. The BCM is mounted up under the dash to the left of the steering column. It is a flat looking module and will have up to 7 connectors plugged into it. There is a 39 wire connector with a White wire with a Dark Green stripe. That wire is for the 3rd brake lamp up on the back of the cab, and is in terminal # ***** of that connector. Find that wire and tap into it for your 12 volt stop lamp feed. Below is a couple of links for the connector information . Copy and paste that link into your browser's address bar and hit enter to see the info.
I hope this helps!!
We may be able to tap into the BCM again for the reverse light feed. I would have to look that up tomorrow.
I see. Well send me the vehicle's Vin number and I will see what I can find.
Do you have a VIN number for me?
I want the Vin number so I can pull up the correct wiring diagram.