Chassis node power input

[Rawze]

(09-29-2020 )alborz Wrote:  Problem solved
Thank you everyone for your input.
I share my findings, incase, incase might be helpful to somebody in this forum and save them money.
in my case, after some research I found all the exterior lights end up in the fuse box under the hood and from there it go to that damn chassis node box which is under the cab, exactly under driver side above air tanks. Peterbilt 579.

I found although if the fuse is good there might be a break on a wire between fuse box and the node and you need to check the wire harness visually to find the break. I was lucky that the break was on a wire right on the B- plug going to node.

when you put the new connector and wiring, etc.. and get it fixed, paint the hell out of the back side of that connector with Flex-seal (the can version, not the spray).

BTW: thanks for sharing the results. I am sure it will help someone else in the future.