thanks for finally figuring it out. I just changed my wires and it works great now. I was going to sell it because i was so upset with it but now it works great. I just drive around with it set on 30 seconds or a minute and leave it on the voltage meter. I really like the screen also how it matches my gauges. I'm discouraged because I've been driving around for so long and I couldn't figure out what was the problem.