I attended Goodwood FOS on the Friday and, having waved goodbye to another Supersports, found my car refused to start. Fortunately the kind people there offered to jump the car and I borrowed a set of leads from Ken Blocks team. The car made it home, just starting for much needed fuel but was completely dead the following morning.
Since then I've changed the battery and it seems to be keeping charge. Typically she sits on trickle charge so I was surprised to have any issues. However, I've noticed two things:
1. The amp whines when the radio is on - getting louder as I accelerate. It disappears when the radio is off so it certainly isn't the gearbox (my first thought). Is this normal? The radio has been upgraded and there's a second wire to the positive battery terminal which I'm guessing is for audio bits and pieces.
2. The car has the heater button lit all the time whether on or off. Could this be due to a bad earth? The light isn't as bright as when the switch is properly on but light enough to notice.
let me make it simple: after 7 years be a top car accessories installation , let me say in any case you should connect directly to the battery a device (have several reasons for that)
Based on what you describe i will do two test
unplug this "strange" cable and see if things return normal
If things don't go back , made the engine start and unplug the positive of the battery , the engine should keep running, next is one by one open heavy electrical device such as high beam , warmer if the car start to get sick (don't press gas always let it turn himself) it mean you alternator or regulator have been damaged
(sorry for my poor english)
