bryand2 Posted October 23, 2012 Share Posted October 23, 2012 Hey guys I just discovered that my 77 already has the 60 amp 280zx alternator upgrade, but when I looked at the way it was wired, it didn't seem correct based on write ups on atlantic z car club and z car creations. The car does run but voltage dips when lights, stereo, heater etc are on. Look at these pics Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 23, 2012 Share Posted October 23, 2012 Pics are too tiny. But there are several ways to wire in the internally regulated alternators, if it charges and the charge lamp works and the battery doesn't drain itself it's probably "right". Have you checked output? The amperage at idle of the stock 60 amp alternator is on the edge even when all of the electrical connections are clean. Keep cleaning connections, everywhere, including grounds, and the dip will get smaller and smaller. Start with the fusible links. It is possible to make a stock alternator work with no dimming. But after 35 years the small corrosion on every connection adds up to some sizable wasted amps. Relays on the light circuits help also and will save your combination switches. Quote Link to comment Share on other sites More sharing options...
bryand2 Posted October 23, 2012 Author Share Posted October 23, 2012 It charges but the charge lamp does not work, and from all of the diagrams I have seen, there are more than two wires hooked up to the female plug on the alternator side of the harness? Quote Link to comment Share on other sites More sharing options...
bryand2 Posted October 23, 2012 Author Share Posted October 23, 2012 what do you mean the amperage for the stock alternator is on the edge? Quote Link to comment Share on other sites More sharing options...
bryand2 Posted October 24, 2012 Author Share Posted October 24, 2012 So i figured out that, according to the atlantic z car write up that whoever did this only connected # 5 and 6 and for some reason the car runs Quote Link to comment Share on other sites More sharing options...
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