Cant find parts! Help!

[bigblock79]

Called the local dodge dealer, they tell me its discontinued and they cant get it. Called local salvage yards and no luck. Cant even find it on ebay.... part number 56045808af - wire harness for 2002 ram 4x4 with 4.7L. anyone had this issue or know where i can get this part?

 

[moparman]

Engine harness? Body harness? Dash harness?

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[bigblock79]

sorry, plugs in under steering column, runs through firewall, plugs into the engine harness, brakes, ABS, fuse box (PDC), left headlight, airbag sensor, fans, and another harness that runs underneath the truck.

 

[HolyRamBatman]

Salvage yard maybe?

 

[bigblock79]

already tried local yards within 1 hr drive

 

[Redtruck-VA]

What's the problem with the original harness? I'm in the process of cutting up the engine harness on mine.

 

[bigblock79]

someone previously cut it up and spliced it back together, im no electrician, id rather replace it entirely and know its good. im having multiple electrical issues

 

[Redtruck-VA]

The engine harness will unplug and you can lay it out on a table to make repairs. It's not difficult. Good luck..

 

[HolyRamBatman]

Getting it out and back in will be your biggest pain in the a$$.

Greg is right splicing wires is easy. Some solder and shrink wrap. May take a little practice but not hard. Cut out the bad and install the new. The right way.

How did the previous owner splice the wires?

 

[bigblock79]

has the whole harness patched in one spot by firewall with connectors crimped on each side.

 

[HolyRamBatman]

Those crimp connectors could be your problem. I have done electrical work for 17 years and have used them on everything even my truck. When I first joined RF someone posted about those crimp connectors being crap. I asked WHY.
The response I got was While the truck is moving it creates vibrations throughout the truck. This can cause loose connections at the crimp and a loose connection where they plug in. And the connectors that tap into a wire by biting over it actually can cut some strands of wire. This in turn decreases the wires ability to conduct electricity.

Well I had no way of arguing because it is very possible. Messing with a mechanic this week going over my truck and the connectors and was given the same info.

In short solder them and use shrink wrap to protect.

 

[Redtruck-VA]

Those crimp connectors could be your problem. I have done electrical work for 17 years and have used them on everything even my truck. When I first joined RF someone posted about those crimp connectors being crap. I asked WHY.
The response I got was While the truck is moving it creates vibrations throughout the truck. This can cause loose connections at the crimp and a loose connection where they plug in. And the connectors that tap into a wire by biting over it actually can cut some strands of wire. This in turn decreases the wires ability to conduct electricity.

Well I had no way of arguing because it is very possible. Messing with a mechanic this week going over my truck and the connectors and was given the same info.

In short solder them and use shrink wrap to protect.

This makes for a great discussion and for what it's worth I solder mine. But what I have been told is that crimping and soldering are both good processes. Good crimping relays on using good tools and soldering requires good technique, both need to have quality heat shrink use to deaden the vibration and to keep moisture out. Good luck....

 

[bigblock79]

ok, i pulled the harness, bought all the tools/supplies, got to looking into it and the wires are corroded all the way... not worth the time and effort. put it all back together to get my windows rolled up and now the truck just cranks over and wont start... i really just need a replacement harness... any ideas now?

 

[Redtruck-VA]

Salvage yard or a long shot would be getting one from Painless.

 

[bigblock79]

i thought about checking with painless but i already know i dont want to fix it that bad since im sure it you be outrageous lol, however, i did find someone on ebay selling the engine harness out of same truck, they sent me pics and vin number for the headlight harness and truck and confirmed with local dodge dealer that they are interchangeable, so, i bought it for $200 and my fingers are crossed!

 

[bigblock79]

installed harness and seems to have fixed most of my problems but its late so ill have to tinker with it tomorrow

 

[bigblock79]

still getting a "P0645" code for A/C Clutch relay? replaced the harness and the fuse box (from dodge dealer, new with new relays and fuses)... im confused

 

[Redtruck-VA]

This what I found.
The P0645 code is stored if an open or short exists in A/C clutch relay control circuit.
Relay being the main suspect.

 

[bigblock79]

all relays are brand new and installed by dealer, has to be something else...

 

[Redtruck-VA]

all relays are brand new and installed by dealer, has to be something else...

If not a relay then perhaps a wiring issue. There isn't much in the circuit.