A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Some headunits have their own fuse, either in the back of the unit itself or as an in-line fuse in it's wiring loom. Best bet would be to pop it out and get busy with a multimeter.
Mine is a bit temperamental (it's the newer style clarion unit) and sometimes refuses to switch on. It's a simple case of switching the engine off and on again, sometimes a couple of times before it works. Haven't found any problems with the wiring loom but for now the engine off/on trick appears to work.
