2013 Infiniti G37 Sedan – Intermittent Electrical Issue. Gauges, Cooling Fan, and Wiring Harness? Need Help Diagnosing
I’ve been chasing an electrical issue on my 2013 Infiniti G37 sedan and I’m hoping someone has seen this before.
The biggest clue is that if I move a certain wiring harness/wire around, everything suddenly starts working again. If I let it move back, the problem comes right back.
Symptoms:
Gauge cluster will randomly stop working.
Cooling fan won’t come on when the issue is happening.
As soon as I move the wire into the right position, the gauges immediately come back to life and the cooling fan turns on.
I’ve literally driven while holding the wire in a certain position just to keep everything working.
The problem is 100% repeatable depending on the position of the wire.
I’ve attached pictures of the exact wire/harness I’m talking about.
At this point I’m trying to figure out if this is:
A broken wire inside the insulation.
A loose or damaged connector.
A bad ground.
A common G37 wiring harness issue.
Or something else entirely.
I don’t have a lot of experience with automotive electrical diagnostics, so if anyone recognizes this harness or has dealt with the same issue on a G37 or 370Z, I’d really appreciate any advice.
What would be the proper way to diagnose this? Is there a common failure point I should inspect first, or should I start by checking continuity on each wire in the harness?
Thanks in advance for any help
(THIS IS THE BACK BEING THE PASSENGER SIDE)