3g alt acting as bad as 2g!

[jammer84_03]

well. i just purchased a 3g alt and did the swap. i have the inline fuse and everything works. the problem is, when i turn on the lights, turn on the heat, roll both windows down it seems like the alt cant keep up with the draw and the voltmeter drops big time. i went and had the battery checked and it was only reading 13.7 when i had it reving at 2,000 rpm.

i know this alt should be good enough not to have that needle budge. do i have a wire grounding out somewhere and can i test that. should i add another ground wire to the engine? i really need this amp to put out enough juice. i got my cb and valentine v1 and sirius radio as the only real add-ons.

 

[n2o-89fox]

did you upgrade the wiring?

 

[jammer84_03]

yes. i did go with the 4ga from the post on the alt to the battery side on the starter solenoid.

however, i just reused the same plug from my 2g on the new 3g so i could plug the 2g back in if i need to if an issue arose like this one. i was wondering if i had the yellow wire in the correct place though. i had been doing some searching prior to my post but still want to positive on what was the culperate.

 

[svtpower]

3G

What brand alternator did you go with?

 

[jammer84_03]

i just got a lifetime warranty from advanced auto. everything tested fine too when i had it checked. its from a 96 taurus. i had a core i took in and go the same back.

http://forums.stangnet.com/showthread.php?t=695504&highlight=3g+alternator

i was looking at that diagram in jrichker's post and saw two different things than my install, and some of the other install pics i have seen.

1) there was a groud comming from the back side of the alt. i see the spot on this alt and i do NOT have it currently hooked up. i will do that when i get home.

2) the yellow wire on the A plug goes to the post on the alt. right now i just have it staying on the plug. do i need to fuse it and have it going to the post on the alt?

 

[n2o-89fox]

yes the yellow wire needs to be connected to the alt it detects how many amps/volts are being put out by the alt. It just has to be hooked up to the power wire, I have mine running to the inline 150 amp fuse.

 

[jammer84_03]

ok. i see that now. for some reason it didnt display the photo at home with that pic in the 3g upgrade thread. i see what i need to do now. basically it just supplying one constant supply from the alt and not upping the dose when i need it. hopefully this solves all my problems. i know its killing the performance on my car with as much drain is on it! thanks for the help

 

[ShortThrow50]

i didnt even upgrade the wiring on mine and dont have that problem. weird

 

[svtpower]

http://www.corral.net/tech/maintenance/130a-tech.html has some pretty good info.

I have a PA Performance kit myself and it came with amazing instructions. I figured I'd just post a link to it on their site but apparently they charge $2.50 to download them in PDF.

 

[n2o-89fox]

i didnt even upgrade the wiring on mine and dont have that problem. weird

Until it catches on fire... But he had the yellow wire wired wrong.

 

[jammer84_03]

not so much wired wrong, but more or less not switched in the first place. ran out of time last night, but i will get home early tonight to do it.

i dont really have a problem with it charging, its just when i turn on all my electronics that i run into the issues. my rd, scanners and cb really put stress on the system at ngiht when i have my lights and heater on, its even worse