sean.dufresne Posted July 11, 2009 Share Posted July 11, 2009 im pretty much done rewiring my 81 280zx because the guy i bought it from was an idiot and cut out all the wire harness'. but im having problems with the alternator. one of the wires comming from the T connector is not wired up. when i got the car it was wired to the battery, but about 2 days after i got the car it melted on me and almost cought on fire. can anyone tell me where it is suposed to go? Quote Link to comment Share on other sites More sharing options...
Magnum380Z Posted July 11, 2009 Share Posted July 11, 2009 first welcome to the forum..it would be a good idea to take pictures of what it is you are talking about. The description you give is not very good and it makes it hard to figure out what you are talking about. if you are not sure or plan on keeping the car i would invest a TSM. Quote Link to comment Share on other sites More sharing options...
roger.svoboda Posted July 11, 2009 Share Posted July 11, 2009 I think he meant download the Factory Service Manual (FSM). you can get it from carfiche.com and xenon.com Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 11, 2009 Author Share Posted July 11, 2009 sorry for the poor description. here are a couple pics, not very good ones but maybe they will help a little bit. i took pics of the T connector so u can see what im talking about. its the only plug on the alternator. one wire from the T connector goes to the batt. but the other one is a mystery. Ive been told it goes to the ignition switch but i tried that and it didnt work... Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 11, 2009 Author Share Posted July 11, 2009 i have the FSM and it told me to wire it to the ignition switch, and the wire still burnt up on me. Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 14, 2009 Author Share Posted July 14, 2009 heres a better pic of what im talking about Quote Link to comment Share on other sites More sharing options...
woldson Posted July 14, 2009 Share Posted July 14, 2009 I was told that had something to do with noise reduction. With the H/O alt from Z specialties those wires are disregarded. Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 14, 2009 Author Share Posted July 14, 2009 what do u mean disregarded? my alt. wont charge with out them Quote Link to comment Share on other sites More sharing options...
loy Posted July 14, 2009 Share Posted July 14, 2009 Here is the terminal descriptions of the alternator. http://www.zcarcreations.com/technical/lr160term.htm Which one is burning S or L? I'm guessing L? Sounds like it could be a bad alternator.. You can leave it disconnected and have it still charge but you need to rev the engine to "self excite" the alternator. Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 15, 2009 Author Share Posted July 15, 2009 i believe it is L and that makes sense because the car ran for a while yestarday with the wire disconnected while i was revving the engine. but id like to know where it goes so i dont have to worry about it. since i dont have the factory wire harness and an aftermarket ignition its hard to find a home for the other end of this wire. any ideas? Quote Link to comment Share on other sites More sharing options...
loy Posted July 15, 2009 Share Posted July 15, 2009 It goes to an "idiot" light that is connected to ignition. It shouldn't melt... itcould possibly be that the alternator is bad. Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 15, 2009 Author Share Posted July 15, 2009 yeah i know what the light is, but the wire melts no matter what i connect it to. the laternator is brand new, but im going to bring it to work tomorow and throw it on the tester just to make sure. Quote Link to comment Share on other sites More sharing options...
loy Posted July 15, 2009 Share Posted July 15, 2009 Does the test, test the field circuity,which is that wire that keeps burning, in the alternator? If not then it wont tell you tht the alterntor is bad Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 17, 2009 Author Share Posted July 17, 2009 it does test for that, and the alternator tested good. so i guess what the next question is, is since i dont have a wire harness, should i just wire it to the light and then to a fuse that goes to the acc, stud on the ignition switch? cuz thats how my fuse block is wired. straight from the acc side if the switch.... hmm any thought? Quote Link to comment Share on other sites More sharing options...
sean.dufresne Posted July 20, 2009 Author Share Posted July 20, 2009 ok so, i tried running the power to the batt. side of the ign. switch, and ran power to the volt gauge. im charging at about 10-11. but only when i rev the motor like you said, to excite the alternator. but still wont charge past 11 volts. any other ideas? P.S. sorry if i sound repetative, just really wish i could get this car running. thats the only thing i have left to figure out. Quote Link to comment Share on other sites More sharing options...
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