Gregorio253 Posted May 14, 2014 Report Share Posted May 14, 2014 So I started doing the big three in 4gauge OFC So far I have done Alt bracket to battery negitive terminal positive alt to positive battery terminal I have to get some more 4 ring terminals And I was looking at stinger volt meters to watch voltage money's tight I would love to buy a smd voltmeter but don't have much money But back to the big three Voltage before car on no accessorys on chargeing was at 14.02 And when I did then when I added the two cables I've done so far it went up to 14.30 But I check my voltage after driveing a little and my voltage went to like 13.80 but I have to check it again today and I'll post with results I would like to get some info about this please and thank you Link to comment Share on other sites More sharing options...
jarrius Posted May 15, 2014 Report Share Posted May 15, 2014 What year truck. May have a PCM controlled alt 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole Link to comment Share on other sites More sharing options...
bamaman Posted May 15, 2014 Report Share Posted May 15, 2014 I have an 2004 and start out at 14.4 and end up at 14.1 when it warms up. It's normal. Link to comment Share on other sites More sharing options...
Gregorio253 Posted May 15, 2014 Author Report Share Posted May 15, 2014 It's a 2008 and I haven't been able to check it again yet and I get off work at 9 I will check it when I get home tonight and get back to post it Link to comment Share on other sites More sharing options...
cgrez33 Posted May 15, 2014 Report Share Posted May 15, 2014 It's PCM controlled if newer than 2005. Current Build: 1999 Tahoe #ComingSoon Previous Build(s): Crossfire Magnum 5k Pontiac G6 GT Link to comment Share on other sites More sharing options...
Ahmed Johnson Posted May 15, 2014 Report Share Posted May 15, 2014 Pcm buddy. Link to comment Share on other sites More sharing options...
jarrius Posted May 15, 2014 Report Share Posted May 15, 2014 ^^^ what they said. Also I have heard of the big 3 actually hurting voltage. Please correct me if I'm wrong. But it's due to actually being able to put the correct you need through the wire you have and not causing a bottle neck kinda thing. But I could be wrong. 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole Link to comment Share on other sites More sharing options...
Ahmed Johnson Posted May 15, 2014 Report Share Posted May 15, 2014 ^^^ what they said. Also I have heard of the big 3 actually hurting voltage. Please correct me if I'm wrong. But it's due to actually being able to put the correct you need through the wire you have and not causing a bottle neck kinda thing. But I could be wrong. I got a pcm and it helped alot. Link to comment Share on other sites More sharing options...
Ahmed Johnson Posted May 15, 2014 Report Share Posted May 15, 2014 Especially the grounds, had a hard time getting the power wire on without taking off the alt, so for a couple days I had just the grounds and it really helped. Link to comment Share on other sites More sharing options...
Gregorio253 Posted May 15, 2014 Author Report Share Posted May 15, 2014 So I check it and I get great voltage when start up I'm at 14.30 so I think it's my batt I have to change it and I plan on getting a d3400 xs power but the batt I have now is from when I bought the truck Link to comment Share on other sites More sharing options...
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