I measured 5 ohms from the trunk release latch with the car keys out. I’m guessing that is too much resistance. I’ve narrowed the two grounds most of the dash components use. G201 and G200 located in the picture. Although they are hard to get to, they’re tucked underneath the dash, but it think my best bet is to check the resistance at these two grounds to see if they’re working correctly

G201

G200

Routing

Routing

I'm a little late to the game. I wonder what happens if you disconnect all of the components, then connect them one by one and test the behavior of each as you go. If you connect one and it gets crazy then you've found it. For components I'm thinking:

- Each window/lock switch module
- Headlight switch module
- DIC panel
- HVAC panel
- Radio
- Gauge cluster

I ran two jumper wires from a known good ground in the engine bay and got back my door controls as well as my seat controls. I found there to be inifiinite resistance in the ground wire g200 I haven't test g201. I'm heavily considering running individual wires from each device to g200 providing good grounds for all the devices.

Sometimes you have to run an overlay to get things working.

I also interestingly found 13 ohms of resistance through the interior lights fuse, but fuse tested good and I swapped with 2 more fuses and it still shows 13 ohms. I'm tracing the diagram and it all seems to go through a black ground wire that goes back to something called S212 I believe I'll double check tomorrow what that means. I assume maybe a junction?

In your travels inside the dash etc, if you see anything like these, open them up and look for corrosion... they may not be the same as yours, but they all do the same thing. Provide a ground buss.

Sounds good I believe I might have seen one of these, it would make sense that something along these lines would be having a issue. I hope i'm chasing the right rabbit and its not a power issue.

It certainly sounds like you have a ground issue.