Can we solve this WJ's Electrical Faults? Mice distract us - the cause was simpler than expected!

In this video we'll take you along as we troubleshoot a serious electrical gremlin on this 2004 Jeep Grand Cherokee WJ. On this truck, several items were failing - ABS light, Airbag light, brake light, no speedometer, no HVAC, no heated seats, no turn signals/multi-fuction switch, the list goes on!

When we got this WJ it had the issue, and it also had many mouse remnants. Nests, mouse crap, a half-eaten seatbelt, and more. Plus, a prior shop fired the parts cannon, replacing the main junction block/BCM.

This video is a great journey to find the fix - but it was simpler than we expected. A great lesson to look for the quick fix, but don't get caught up in what you see or what other shops did. Follow your diagnostic steps! Had I done that, I would have found the issue faster!

CHAPTERS:
00:00 Intro
00:40 Flasher Unit
01:38 Planning our Attack
02:23 Scanning Codes
04:40 Bulkhead Connector
08:32 Door Wires
09:28 More Dash Wiring Checks
16:00 Some New Data - Service Data
22:52 Remove the center console - Grounds
24:53 Checking Grounds G200 and G201
30:42 Quick check of the clockspring
32:01 Probing the AZC Wiring
36:20 Fuse 20 to AZC Wiring Check
37:14 Finding the culprit - we think!
40:19 Confirmation - Issue Identified!
42:46 Conclusion of Part 1