I know this isn't a car audio forum but you all are very intelligent and have helped me a lot in in the past. I hit a pot hole a couple days ago and my car stereo shut off. It's a simple JVC unit that I put in a couple years back so I can use my iPod while driving. I tested the wiring harness and every connection showed a resistance of .04ohms which is great, so I know my harness is wired correctly. However I'm not sure how to test and see if the JVC unit is receiving any juice or if there is a short in the ground. Thanks for any help. Admin: If this is in the wrong forum please move it to the correct location.