Posted May 15, 201015 yr So lastnight I installed a digital volt meter in my dash, and today I noticed that when starting the car it reads around 14.5v, when not running it reads around 12.8v...However driving around a bit I see my voltage drop down to around 12.8v, not staying at 14.5v, even if I'm not pushing my subwoofers...Is this normal? I assume it has something to do with the alternator?
May 15, 201015 yr Author check for belt slipping, or ur alt and or batt might b bad.It's a new battery so I doubt it's that.
May 15, 201015 yr Author Did you calibrate the volt meterI measured the volts at the wires before hooking it up, then I hooked it up and it read the same voltage. I assume that it's accurate?
May 15, 201015 yr Author Thats pretty accurate did you get the power wire from your amp?I ran 3 wires from the back of my amp, 1 for positive, 1 for ground, and one for remote..going into the dash connected to the unit.
May 15, 201015 yr check your + post.. make sure your tighted it well after adding your amp lead. the second question would be.. is it 12.8 at a redlight? with it in drive and your foot on the break? or is it 12.8 as your driving down the road or hwy?
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.