New alternator question Options

[Stu37363]

I installed a new alternator 170 amp. it seems to be working great. it drove to the gas station, but then for the first time in years my car wouldnt start and i had to roll start it today. ive got an optima yellow top battery.

I have upgraded the battery ground, but have not upgraded the alt to battery wire or the engine to chassis wire.

I was testing out my alt and was cranking out music, my speakers pulled about 60 amps and the speakers started to get fuzzy and quiet, so i turned the volumn down and revved the engine out of instinct, and it went away before i could figure out what was going on.

I know this is probably a stupid question, but is it possible i blew some charging fuse or something?

voltage shows 14.5 when running and was showing 11.5 when it wouldnt start.

Does the wire from the alt go straight to the battery, or does it split or get fused at any point?

Happy to give any more info, i just dont know what else you may need to know.

Thanks

[stephen_lee]

i've left my optima over night with a 1-2A draw for years and it always started no problem. replace ur battery + to starter wire with a 4ga one from the parts store && see if it helps. i replaced a starter once and all it was was that stupid wire. $4 wire > $120 STARTER

a fully charged yellow top should carry a 10a draw for 5 hours, it seems like u mean ur getting a 0.10a draw, which is normal. stock my ST pulled ~ .6a (.4 was in the dome circuit)