Guest sweething_2_5 Posted June 29, 2004 Share Posted June 29, 2004 I installed i think its refered to as a two wirealt, its an early 80's gm alt, that was brand new when it was installed. at idle which on my car is about 900 rpms, its putting out about 8 volts, gets a little better like 11-13 volts when i rev it up but still not great. I was wondering maybe i have it hooked up worng or something. i also did the maxi fuse up grade at the same time to get rid of the fusible links. any help would be great. Its a 77 280z thanks Quote Link to comment Share on other sites More sharing options...
A. G. Olphart Posted July 1, 2004 Share Posted July 1, 2004 It may be a wiring problem, or the regulator could be bad.. Here are some links on wiring one up-- http://www.oldengine.org/unfaq/10si.htm http://www.derbypro.com/tut4.html http://www.rowand.net/Shop/Tech/GmAlternatorIdentification.htm One caveat regarding the test described in #4 of the second link: per an old Chilton's manual that I have, your screwdriver should only have to go in 3/4" or so to depress the grounding tab (never over an inch). If grounding this tab raises the output voltage, the alternator is good and the regulator (internal) is bad. Quote Link to comment Share on other sites More sharing options...
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