Hey guys, i know im new but i never post here cause whenever i need to know something i just search these forums and find an answer, but i cant find one for this issue.
So i have all stock electrical (Minus a 2nd batt in the trunk) In a 2010 Civic.
And for my newest system i finally got a digital voltmeter in the dash.
And i didn't notice it the first few days, mainly cause i wasnt looking at it i assume.
But lately when driving it will drop from 14.3ish to 12.3ish for no reason, music on or off.
Like today and yesterday i was idling testing my new box/sub and everything. It was all running fine at 14v, i turned the stereo off and drove away, and as soon as i accelerated a little it dropped from 14v to 12v for no reason. I pull over again it stays at 12v, i accelerate and sometimes it jumps right back to 14, and others it stays at 12 till i stop again. Weird
Then later ill start my car, starts at 14, drive (with no music) and drops down to low 12's again. Driving around town it decides what it wants to do, at 12 or 14, jumps back and forth ( again with no music) but on highway it seems to like 14v i noticed.
Im not sure if some of the diodes are burnt up in my stock alt (70 or 80 amp btw) or 1 of the 2 batterys are having probs.
But i did do some research and found something called ELD circuit, which hondas have to regulate the voltage. Not sure what this is, if i have to bypass it or what.
Any and all input would be appreciated! Thanks guys.