I just installed a digital voltmeter, i ran the +12 volt down the passenger side, away from any wires, and grounded it to a bolt on the chassis, and the +12 volt switched source is the same as the head unit switched source. Anyways, i have a single 12" and i am getting buzzing in it now that I installed the voltmeter. I disconnected the ground, and the interference stopped...so I think this may be the source, but I'm not sure. I have tried multiple grounding points to get rid of the interference, but can't seem to do so. Does anyone know how I can get rid of it? Thanks.
No announcement yet.
digital voltmeter = interference??