Voltmeter Going Crazy

[Kerr34]

Hey guys i just got a new head unit installed into my car and since then my battery keeps going flat.... also when i turn on my lights my head unit sometimes restarts and the car loses alot of power.

what could be causing this i was told that it could be the alternater or that the head unit is not earthed properly.

the car is at about 14.25volts and can drop quit a bit

r34 GT-t

also wondering if any one knows if they came with stock splits and if so where they could be.

[TURTYTO]

Hey guys i just got a new head unit installed into my car and since then my battery keeps going flat.... also when i turn on my lights my head unit sometimes restarts and the car loses alot of power.

what could be causing this i was told that it could be the alternater or that the head unit is not earthed properly.

the car is at about 14.25volts and can drop quit a bit

r34 GT-t

also wondering if any one knows if they came with stock splits and if so where they could be.

dose the head unit turn offf with the ignition or do you have to turn the unit on manually.

if you can pull the deck out and change the earth to some metal in the dash. some people will wire the earth up to an existing wire that looks like a black earth wire but turns out to be a control wire for your headlights.

to check your alternater start the car and turn everything on lights(high beam) stereo, then check your

volts from the alternator it should still be up around the 14v. check your battery as well that should stay firmly around 14v if the battery loses power the alterantors not doing its job and will probly need new bushes(about 12 bucks) or new module.

when you say the car loses alot of power, do mean engine power or volts. cuase if its engine power

it most probably because of the lack volts not being enough to supply a desent spark. so if its running of the battery it aint going to last long.

[RICCA]

When i got 34 had splits at the back some at the front unless they were put in

[charlie22]

The easiest way to check would be to put a Multi Meter on both the battery and alternator.

How long does it take for the battery to go flat?

I doubt it's the alternator, sounds more like a wiring problem.

What do you mean by loosing power?

[Kerr34]

fixed guys it was just not earthed properly thanks for ure help guys