I have a short in my 30 amp D.C.C "ECU-B”, "RAD NO.1” and "DOME” fuses which is causing all sorts of problems which include hard shifting, throwing OBD codes P0420 and P0793, to having an annoying squealing engine noise that is coming from the car speakers. I did recently install a new aftermarket stereo in the car which was working fine until my husband decided to go messing around with things and even somehow hooked the stereo up direct which I believe could be the reason for the headache I've experienced over it. Now I am no mechanic and have never even worked on a car before so I am learni…
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