nbesheer Posted June 7, 2021 Share Posted June 7, 2021 Damn I'm stumped, posting on here after who knows how many years. Anyways I have a 1983 280ZX N/A and after installing a battery cutout switch on the negative terminal the car misfires and runs very rich. However, if I wire the chassis ground directly back to the battery it works fine, but that defeats the purpose of a cutout switch. Engine wise it is generally stock. I have 2 gauge from negative to switch, 4 gauge from switch to starter, 8 gauge from switch to chassis. Any ideas ? Quote Link to comment Share on other sites More sharing options...
jonbill Posted June 8, 2021 Share Posted June 8, 2021 what cut out switch is it? maybe its got some diodes (or?) that affect the potential of the ground. or maybe the connection just isn't good. Quote Link to comment Share on other sites More sharing options...
260DET Posted June 18, 2021 Share Posted June 18, 2021 Change the switch over to the + side, that's where they usually go in my experience. Quote Link to comment Share on other sites More sharing options...
Jeff Posted June 18, 2021 Share Posted June 18, 2021 (edited) If you're switching the ground side why are you running anything to the starter? I agree with 260DET, my race car is switched on the positive side and that's what I'm used to seeing. Edited June 18, 2021 by Jeff Quote Link to comment Share on other sites More sharing options...
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