Hi tryed to connect a car radio to spot light wiring when the wire touched it sparked the bulb blew,now the lights wont come on.Changed bulb,replaced 4 15 amp fuses lights still wont work .Is there any body out there that can help .
The car radio is supposed to be on it's own fused circuit and not connected to a lighting circuit as for one the amp ratings alone are different. Sounds like you need a professional to actually have a look at it as it's anybod'y guess what you blown.
Probably the lighting circuit is not fused either and that would explain the reason why they don't work after replacing the 4 fuses. If the lighting circuit isn't fused then I would check your leisure battery just in case it has been short circuited. If it has then you may need a new battery as well as the 12 volt circuit rewiring.