Radio resets every time I start engine
Now, I know what you're all gonna do, refer me to another thread about a fuse being blown, the constant and acc power being switched, etc., but let me explain.
I got this mustang in a trade, and the PO installed a sony head unit, wiring looks alright, after market harness adapter it looks like, and all other wires were spliced in with quick connect tubes. The radio will turn on, I set stations, clock etc, and then turn the car off. Switch it trip acc on, and everything is still saved, it isn't until I actually start the engine that it resets. I've checked all fuses under the dash, checked for constant power, and acc, and everything seems to be on order. I am totally lost on this one. Amy suggestions? It does crank pretty slow, and the battery isn't the proper battery i don't think, it's got a mercedes benz battery?