cLos510

Ok,..i was told that if i dnt charge a battery before its 1st use and its low that it will never reach its full potential

Ok and with the car off the battery is at 12.7 and with the car on ita at 13.8v

Im using my dads multimeter and whats a dmm? And those lights are not coming on the dash and i checked for loose connections but everything seems to be solid, i dnt see that the alternator has a fuse..and the front battery is a yellow top optima at least a year old, but idk how long it has been sitting in the car shop i got it from

When i started the car the meter was bouncing all over but then it rested at 13.11volts for the alternator

Well i did that but it looks like they ran a 2nd 4 gauge wire so now theres 2

illl take this to the pm's miguiel.... i dont what to clogged up your thread op... im in hayward so hit me up if you want me to check it out , ill be sure to take my harbor freight DM, fluke RMS DM, fluke clamp, amm-1. Sure how do i get a hold of u

The big 3 is the positive post of battery to the positive of alternator and the negative of battery to ground and the frame of the alternator to the chassis?

13.6-13.8 yes. Less than that, no. No vehicle on a standard 12v electrical system will charge that low. the only reason for voltage to read lower than that all of the time is the alternator isn't charging at the voltage it should be.Yea i noticed other ppls 12v systems would be at 13.8 or even 14 yes but you can rule the alternator is bad.. check connections.. check every wire like grounds and even the back plug on the alternators.. all that can make it not operate properly Ive asked different ppl the question of if i should ground the alternator to the chassis and ive got different answers, so would it matter if i didnt ground it or not

Yes union city (bay area) And ok ill do that

13.6-13.8 yes. Less than that, no. No vehicle on a standard 12v electrical system will charge that low. the only reason for voltage to read lower than that all of the time is the alternator isn't charging at the voltage it should be. Yea i noticed other ppls 12v systems would be at 13.8 or even 14

Well the shop supposedly tuned and set everything with the 3sixty.3 but i can still set the gain on the amp with the dd1?Most shops are notorious for doing things half assed or just flat out wrong. Yea, im not a total noobie at this but i wish there was somewhere reliable in my area that i could go to that would actually know what thier doing..it would be cool if rockford could have thier own ppl who kno thier products to install things themselves

Ok thanks, makes sense, ill try that and see what happens

Well the shop supposedly tuned and set everything with the 3sixty.3 but i can still set the gain on the amp with the dd1?

I dnt know them, i can ask the shop that made the box, but i doubt they saved the specs..and idk how to post pictures on here

If its computer controlled can it be changed? And it only takes seconds, wenever i turn the bass up or the volume on the head unit

Yea 13.2 with no musicSee my statement about swapping with a known good alt and looking for the voltage to rise. How are you measuring the 13.2? Well i just measures the yellow top battery under the hood and it read 12.72 volts..using a volt meter

Yea 13.2 with no music

DC power

I dnt know exactly how to post pictures on here

Yea, well the shop i went to built me a custom bandpass box that has the port going directly into the cabin of the car, which kinda has me confused as to why its not as loud

Everything was set by a RF 3sixty.3 and a local shop tuned it..i did notice that the subs arent that loud and wen u try turning it up the output led light goes to the +2db(red) without turning the knob all that much

Well, with you having the potential to pull about 300-350a of current or so, with a stock alternator that may only be 80a (with about 40a going to accessories of the vehicle), you have probably enough reserve to stay in the 13's IF you had a 250a or so alternator to back it. "It takes power to make power." Well i do have a 320 amp alternator though so im just wondering if 13.2 volts is normal or if i should be at a higher voltage with the 2 batteries and that alternator

Its a 2010 nissan altima, but i have a dc power h/o alternator 320 amp..i remembered when i had the yellow top inatalled i didnt charge it so could it be that if that battery is not at its full potential that its not allowing anything more than 13.2 volts, because thats what im at on idle

I have a yellow top battery under the hood and a D3100 as a secondary. I have two T2 twelves and a RF T2500.1, T800.4 and wenever i turn up the volume i see my voltage drops to around 11v..ive seen other ppl use 12v batteries and have thier voltage at high 13v or even 14 volts. Would adding another D3100 bring up the voltage or would wven do anything?