CAN Wiring color codes for the Bus

ALTASNOWMAN

MEMBER
2002 DODGE RAM
4.7L
V8
2WD
AUTOMATIC
122,000 MILES

Hi, I am looking for the color codes for the BUS and the other wiring from the computers to the dash and fuse block. Also am looking for where the modules are in the My truck listed above is a 1500 SLT.

Friday, August 2nd, 2019 AT 7:37 AM

9 Replies

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

I have included all the information that you have requested in the diagrams down below. Please go through these wiring diagrams and component locations and let us know if you need anything else. That's why we are here.

Thanks,
Alex
2CarPros

Images (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

Thursday, September 12th, 2019 AT 12:00 PM

ALTASNOWMAN

MEMBER
39 POSTS

Hi Alex, thanks for the wiring diagrams. They will be a great help when I start tracing the bad wire.

Was this

answer

helpful?

Yes

Thursday, September 12th, 2019 AT 12:12 PM

KEN L

MASTER CERTIFIED MECHANIC
43,070 POSTS

This guide should help:

https://www.2carpros.com/articles/how-to-check-wiring

Please let us know what you find. We are interested to see what it is.

Was this

answer

helpful?

Yes

Friday, September 13th, 2019 AT 10:16 AM

ALTASNOWMAN

MEMBER
39 POSTS

When I did some testing fuse #23 was pulled and all dash and Inst came back but now no remote starter, doorlocks and a few others. Sorry it took so long as truck quit on me and I think the alternator went. Will update soon.

Was this

answer

helpful?

Yes

Friday, July 30th, 2021 AT 4:01 AM

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Let us know if you need any additional wiring diagrams as we're still here to help. Here are a few tutorials showing how to remove the serpentine belt and alternator you mentioned that may have failed:

https://www.2carpros.com/articles/replace-serpentine-belt

https://www.2carpros.com/articles/how-to-replace-an-alternator

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Most local auto parts stores will test an alternator for free. I've attached picture steps below on how to remove and replace the serpentine belt and alternator on your truck. Keep us updated. Hope this helps and thanks again for using 2CarPros.

Images (Click to make bigger)