So I was doing some trouble shooting this weekend on my electrical system and i am lost. I was told to measure the volts at the battery and the alternator with car running and all my lights and fan on and see what the volts say. I have been having a problem with the volts dropping down past 12 volts. So I tested and I get 13.9 volts at the battery, 13.9 volts at the alternator and 13.9-14 at the horn relay with everything on. the guage in dash stills reads 12 volts and sometimes flucuates lower and higher. What the hell? I don't know where to look next. Everything is brnad new too. Any more suggestions? I also ran the 8 guage wire direct from the battery to the alternator and now when I taop the brakes the volts drop.
67 Camaro Pro Street, 540 Bill Mitchell Merlin big block, Merlin Aluminum heads, Holley 870, hydraulic camshaft, 2" Hooker Super Comp headers, Mallory and Crane ignition system, TH400, 2600 stahl, Ford 9" w/ 4:10 gears and posi.