IdahoKidd Posted January 13, 2010 Share Posted January 13, 2010 When hooking up the tach in my 280 after installing the 83zxt harness, do I just use the resistor from the zxt harness and do away with the resistor already in place for the 280? use them both? can I leave the zxt resistor out and hook up to the existing tach wire at the coil? And; does the tach have to be hooked up and working for the car to run properly or can I leave the tach completely unhooked for now? Thanks, Leonard Quote Link to comment Share on other sites More sharing options...
magnify69 Posted February 24, 2010 Share Posted February 24, 2010 you can hook it up to the bigger blue wire on the existing harness off the 280z... well atleast thats how i did it it worked Quote Link to comment Share on other sites More sharing options...
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