Change in polarity on electricals
This may be of some help, and it was successful on my Aston Martin that had positive ground. I wanted to replace the radio,as the original could not be fixed economically,so I decided to buy a negative ground unit. The swap was really simple. I merely used the chassis as the positive side, and insulated everything else from touching,and it worked just fine. I suspect this might work for you. I know, it is an odd arrangement, but it worked for me. All the best. ron
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