Upgrades on gauges questions

Del said

Sorry to ask a silly question but if you used a amp guage then could you use the 2 existing wires like it was hooked up from factory. Thanks

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Yes a aftermarket AMP gauge would use the same 2 wires as OEM amp gauge. You still have a gauge that can shut down the whole car though. If I can opt for a VOLTS gauge I will... and did so for that one reason.