ECU, Wiring, Sensors
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By 99cx
#224684 just have a quick question for anyone who REALLY know stuff about car electrical systems.

The vehicle im working on has a positive ground, that is also master switched.
I need to put a radio in it thats made for a regular 12v positive car.

how can this be done?
its not as easy as it sounds.

ive tried taking the power dirrectly off the battery but i am unsuccesful.

i think it can be done with a relay, i just need a second opinion in wiring it up.

Thanks.