Hey guys. I have a 2001 Ranger with after market head unit and amp. All of a sudden one day I think my radio is messing up. I can hear my bass thru my subs but no words are coming through my speakers. So I checked speakers and they are fine. So I go to fuse panel inside cab. When I pull #26 fuse, my speakers produce sound again but... When I pull #26 fuse to get my speakers to produce sound, my speedometer, wind shield wipers, and my interior dome light stop working. Now all of a sudden, my oil pressure gauge goes crazy. Thought it might of been the front seal, so I replaced it and the problem is still there. I know about what I need to do but I'm not sure exactly how to go about doing it without taking my entire dash off and trying to find a faulty ground wire some where that's got messed up some how. So if anyone has any advice and could possibly tell me what to do step by step as I'm not much on electrical, I'd greatly appreciate it.

 

Still need any advice that anyone can give.

 

Cab fuse box #26 powers several things, like cluster, GEM, seat belt module and Battery Saver relay(which also powers cab lights)

There is no obvious connection between fuse 26 and the radio circuits

2001 Radio wiring seen here: https://www.therangerstation.com/tec...dio_Wiring.pdf

Since its a 3rd party radio I would suspect it first
You could pull out the radio and then test the wiring on the Ford side of the adapter harness to see if its "missing a ground"