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Charging issue (non-charging)

alternator charging electrical wiring

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#1 2eighTZ4me

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Posted 4 weeks ago

Just got my LS6 up and running using MS3Pro and the DIYAutoTune drop on LSx 24 harness. From the harness, there is 1 wire that goes to the alternator to activate a low charging light. That's the only wire on the plug.

 

The alternator I got reman from RockAuto (98-02 Camaro) was tested fine at AutoZone. The alternator will not charge. I have the hot lug run back to a fuse block where all the large gauge wires centralize from the battery. I tried running a wire from the 'sense' pin on the alternator back to the fuse block so the system has 'reference' voltage, but that didn't work either.

 

The 4 pins on my alternator plug are 1) Phase, 2) Indicator lamp, 3) Ignition, and 4) Sense. The DIY harness was rigged to the Indicator lamp, and as stated, I tried running a Sense wire to my fuse block. I am currently researching, but not coming up with much.

 

I am not quite sure what I'm missing here. Anybody have any ideas?

 

 


73 240 L28ET, MSNS, coilovers, Bilsteins, NASCAR sway bar, full cage, Z32 calipers. 413 rwhp / 436 torque. Road race machine - Corvette killer.
4/78 280 - daily driver. 3.1 stroker, Rusch Motorsports race ported MN47, Racer Brown cam, Rebello triple Mikuni 44s. 216rwhp.
5/78 280 - next project - 71 Camaro Rally Sport - pristine.
1984 GPZ 750 turbo. Stage 4 turbo, 810cc 184rwhp

#2 Richard Oben

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Posted 3 weeks ago

The wire to the indicator needs a bridge from IGN 12V and a resistor to tell the alternator to charge.  Do a google search.  DO NOT JUST 12 V it, it may work but it will burn up the alternator pretty fast.  Lots of info on this on LS1tech.  HTH, Richard. 



#3 2eighTZ4me

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Posted 3 weeks ago

Thanks Richard. I came across the motherlode of an article explaining the err of my ways....think I'm good now. On the way out to go wire it up 'properly' now....thanks again for the reply!

 

http://www.pirate4x4...a/Wiring/Part2/


73 240 L28ET, MSNS, coilovers, Bilsteins, NASCAR sway bar, full cage, Z32 calipers. 413 rwhp / 436 torque. Road race machine - Corvette killer.
4/78 280 - daily driver. 3.1 stroker, Rusch Motorsports race ported MN47, Racer Brown cam, Rebello triple Mikuni 44s. 216rwhp.
5/78 280 - next project - 71 Camaro Rally Sport - pristine.
1984 GPZ 750 turbo. Stage 4 turbo, 810cc 184rwhp

#4 Zetsaz

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Posted 3 weeks ago

If it's any help, I spent the better part of a month dealing with a no-charge issue on my old maxima last year after autozone tested it good, only to run several of my own diagnostics to find out it wasn't. I wouldn't trust any electrical tests from Autozone. Get it tested at O'Reilly and NAPA. 







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