suhmon_sun Posted January 14, 2018 Report Share Posted January 14, 2018 Sup guys. I have an fn alternator but my new harness has an 1-2(ab) style connection. I don’t wanna mess this up. Which wire goes where? I’ll put up some pics in a bit. Quote Link to comment
thisismatt Posted January 14, 2018 Report Share Posted January 14, 2018 F goes to your ignition/charge lamp. N goes to +12v, ideally a switched source. 2 Quote Link to comment
suhmon_sun Posted January 14, 2018 Author Report Share Posted January 14, 2018 https://lensdump.com/i/o4e5z https://lensdump.com/i/o4Sn5 Quote Link to comment
datzenmike Posted January 14, 2018 Report Share Posted January 14, 2018 Nothing happens if wired wrongly. Charge light does not work. Just swap them around. 1 Quote Link to comment
suhmon_sun Posted January 14, 2018 Author Report Share Posted January 14, 2018 Nothing happens if wired wrongly. Charge light does not work. Just swap them around. Okay cool. Yeah I forgot to say I don’t have the plug for it anymore so I duno which is field and neutral on the alternator lol. Thank you guys for the help. You guys are awesome! Quote Link to comment
thisismatt Posted January 14, 2018 Report Share Posted January 14, 2018 Nothing happens if wired wrongly. Charge light does not work. Just swap them around. I wouldn't count on that... The top of the T connector is the "N" (+12v), the leg is the "F" (charge/ignition lamp) 1 Quote Link to comment
thisismatt Posted January 14, 2018 Report Share Posted January 14, 2018 Btw, where in AG are you? I grew up on the mesa... Quote Link to comment
suhmon_sun Posted January 14, 2018 Author Report Share Posted January 14, 2018 I wouldn't count on that... The top of the T connector is the "N" (+12v), the leg is the "F" (charge/ignition lamp) Okay. Yeah I have it wired like you said. Btw, where in AG are you? I grew up on the mesa... I just moved here. I live up behind Walmart a bit. Quote Link to comment
datzenmike Posted January 14, 2018 Report Share Posted January 14, 2018 I wouldn't count on that... The top of the T connector is the "N" (+12v), the leg is the "F" (charge/ignition lamp) What I found was that I had mine wired wrong for 3 years. Never had a problem with it until I got a volt gauge that told me what was really going on. When the battery got below 11 volts it would start charging until shut off. There was enough residual magnetism to 'kick start' it and even at 11 volts the battery always started the engine. Never noticed that the red charge light didn't come on with the key. I swapped the two wires and red light now works and the volt gauge shows charge all the time it's running. 2002 100 amp Altima alternator. Quote Link to comment
thisismatt Posted January 14, 2018 Report Share Posted January 14, 2018 What I found was that I had mine wired wrong for 3 years. Never had a problem with it until I got a volt gauge that told me what was really going on. When the battery got below 11 volts it would start charging until shut off. There was enough residual magnetism to 'kick start' it and even at 11 volts the battery always started the engine. Never noticed that the red charge light didn't come on with the key. I swapped the two wires and red light now works and the volt gauge shows charge all the time it's running. 2002 100 amp Altima alternator. Pretty sure I've heard of people popping alts by having them reversed, but can't say for sure. Either way, it's not something I would guess about when going wrong potentially means having to swap the alt again and another trip to the LAPS Quote Link to comment
thisismatt Posted January 14, 2018 Report Share Posted January 14, 2018 Okay. Yeah I have it wired like you said. I just moved here. I live up behind Walmart a bit. Cool. You probably don't know where the mesa is, then :rofl: Quote Link to comment
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