carl severtsen posted an answer for this Pioneer Audio Players & Recorders:
"Try swapping everything external to the amp with another channel to see if it follows...."
carl severtsen posted an answer for this Kia Cars & Trucks:
"Timing belts should be replaced every so many miles OR time. What ever comes first. Check..."
carl severtsen posted an answer for this Cars & Trucks:
"Swap the starter relay with the horn one. Tap on the starter with a small hammer while..."
carl severtsen posted an answer for this 2003 Audi A6:
"What is the fuse labeled as in the booklet? Try opening all the way and closing each door..."