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Another electrical problem...

StevoandaRedK5

1/2 ton status
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Jun 11, 2008
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Dallas, TX
well i thought i was done with electrical stuff a while back when i got all the lighting and signals figured out. however I'm now stumped as to why my truck now has no power to the cab. I drove it home last thursday, ran fine. Got up the next morning to leave for school and it's dead. No horn, lights, flashers, gauge lights, nada.

Battery is fully charged. I have full voltage to starter and junction block on firewall. nothing else other than those two. I dropped the starter down to check the connections and thought they weren't perfect, they function, so I tightened all those up and bolted the starter back in. What am I missing? Did I lose a connection on the starter or have a bad one, or possibly burned a wire in half, bad solenoid? Any help is appreciated guys.

On a side note...i really don't like how GM made the cab get it's power through the starter, i mean it works, but i hate working on it, especially when there's headers and a heat shield in the way.
 
Are you getting power to your gauge fuse? Is it good?

Do you have fusible link(s) between the junction block and fuse panel connector?
 
all the fuses in the box look good, what relays would I check? I don't think i'm getting power to the fuse box itself...
 
now that you mentioned fusible links, there is one between the starter and the cab, and that is most likely the problem. I have full voltage on the starter side, and less than a volt on the cab side. Sound like that's it?

EDIT: so it's not the fusible link, i pulled it off and it's showing no resistance, i have to figure out where all the voltage is going...
 
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