voltmeter check?
 

ive gotten all the other guages working now (big relief) except the voltmeter. i dont really know how to use the "voltmeter" tool, but how can i check out this problem? i know of the brown wire from the alternator, and im sure the alternator works fine because the battery is keeping up a charge just fine. can i try and find the brown wire at the firewall and tap a test light into it while the truck is running or will this burn up something?

Re: voltmeter check?
 

use a voltmeter to check and see how much the alternator is putting out when its running.then chase the wires and see if you got any broking or lose connections

Re: voltmeter check?
 

can i put the voltmeter on the wire at the cab to see if its putting out the same voltage? i knida went crazy with the electrical tape when i put the split loom on and that would be easier than cutting it all off and chasing it physically

Re: voltmeter check?
 

That's what I'd do, If you have the same output at the gauge then I'd suspect a bad gauge....If no voltage start stripping loom looking for a break in the wire.