94ram15004x4
Junior Member
- Joined
- Jan 31, 2022
- Posts
- 1
- Reaction score
- 0
- Location
- bangor michigan
- Ram Year
- 2004 3500 crew cab 4x4
- Engine
- cummins 12 valve
Ive been searching and cant seem to find an answer. I have found a 04 3500 crew cab dually with no drivetrain. when they pulled the engine they cut the harness and took the fuse box, abs and computers. I have a 12 valve that I am going to put in to it with a nv5600. so the only reason I need the electronics to work is for the gauges. The plan was to pull the wires for the gauges i need and leave the check engine light on for the others. The only thing I can see loosing is the wait to start and wif, With that being said. I found a 04 gas 5.7 harness and pcm for cheap and was going to modify that. I can get all my lights to operates, the dash now works and everything interior works. I went to start on figuring out the gauges and im running in to issues. my scan tool will not connect, also tried a friends. just gives a generic connection error.
When I run the dash diagnostics I get multiple codes AA, AC, AD and AE. ok, looks like the can bus system is down. instantly go to checking power and grounds for the data link- plugs #4 and 5 have good ground. pin 16 has good 12 volts. I back probe pin 2 and only get .3volts but it cycles between that and .00 I have no resistance between pins 7 and 12. When the battery is disconnected and only my meter is hooked up im getting 12 volts on pin 2. Pins 7 and 12 have no short to power or ground and are good to the pcm
I have disconnected the abs, radio, pcm, tcm, fbc/ fuse box, hvac, compass.
Im wondering what routes others would go on. I know its a mix match of parts, Ive swapped different computers before and they will at least talk. Im trying to figure out if i have a bad part, or my idea wont work. The reason Im trying to make it work is because I have yet to find a diesel ecm and wiring harness for the truck.
When I run the dash diagnostics I get multiple codes AA, AC, AD and AE. ok, looks like the can bus system is down. instantly go to checking power and grounds for the data link- plugs #4 and 5 have good ground. pin 16 has good 12 volts. I back probe pin 2 and only get .3volts but it cycles between that and .00 I have no resistance between pins 7 and 12. When the battery is disconnected and only my meter is hooked up im getting 12 volts on pin 2. Pins 7 and 12 have no short to power or ground and are good to the pcm
I have disconnected the abs, radio, pcm, tcm, fbc/ fuse box, hvac, compass.
Im wondering what routes others would go on. I know its a mix match of parts, Ive swapped different computers before and they will at least talk. Im trying to figure out if i have a bad part, or my idea wont work. The reason Im trying to make it work is because I have yet to find a diesel ecm and wiring harness for the truck.