2 dead fuses and no instrument cluster lights

[Savanah23]

I've got a 97 k1500 5.7L. When I parked it I had lights on my instrument cluster and now I dont. My indicator lights still work (seat belt, brights, CEL, air bag, etc) but none of my gauges do. Also lost power to fuse number 14 and fuse number 9. Neither one of them is blown though. I have a really hard time comprehending anything electrical so I have no idea where to even start other than using a test light to check for power at the fuses. Any help is greatly appreciated!

 

[RawbDidIt]

I've got a 97 k1500 5.7L. When I parked it I had lights on my instrument cluster and now I dont. My indicator lights still work (seat belt, brights, CEL, air bag, etc) but none of my gauges do. Also lost power to fuse number 14 and fuse number 9. Neither one of them is blown though. I have a really hard time comprehending anything electrical so I have no idea where to even start other than using a test light to check for power at the fuses. Any help is greatly appreciated!

Do you have an aftermarket stereo installed?

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[Savanah23]

Do you have an aftermarket stereo installed?

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Yes I do... a 10 inch subwoofer, 1000 watt amp and a very basic Walmart dual audio deck....

What are you getting at?

 

[RawbDidIt]

Mine did the same thing shortly after I bought it. The culprit was the wiring on the back of the head unit. It was causing the circuit to blow forget which one, but I think it was 14. The illumination circuit is the gray wire behind the dash. There's a few places it'll pop up, but you'll want to look up the instrument cluster illumination circuit to trace the disconnect. It connects to the instrument cluster, the head unit, and the options on the right of the instrument cluster. If the instrument cluster is the only thing that lost light, trace the gray wire and the ground wires coming from the harness behind the instrument cluster, that's where your problem will be. If everything on the circuit lost light, you'll want to trace the wire back to the headlight switch, the convenience center, or the fuse itself. I'm a little fuzzy on the details at this point, but a Google search will bring up the circuit.

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[Savanah23]

Mine did the same thing shortly after I bought it. The culprit was the wiring on the back of the head unit. It was causing the circuit to blow forget which one, but I think it was 14. The illumination circuit is the gray wire behind the dash. There's a few places it'll pop up, but you'll want to look up the instrument cluster illumination circuit to trace the disconnect. It connects to the instrument cluster, the head unit, and the options on the right of the instrument cluster. If the instrument cluster is the only thing that lost light, trace the gray wire and the ground wires coming from the harness behind the instrument cluster, that's where your problem will be. If everything on the circuit lost light, you'll want to trace the wire back to the headlight switch, the convenience center, or the fuse itself. I'm a little fuzzy on the details at this point, but a Google search will bring up the circuit.

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Yeah see even reading all that I'm like wait whaaaa? Lol. If I read it over and over very slowly I know I'll understand what youre saying before I go to bed tonight atleast. Haha

You said it caused #14 to blow? None of my fuses blew they just lost power

 

[RawbDidIt]

Yeah see even reading all that I'm like wait whaaaa? Lol. If I read it over and over very slowly I know I'll understand what youre saying before I go to bed tonight atleast. Haha

You said it caused #14 to blow? None of my fuses blew they just lost power

So you have no power at the fuse? How are you testing this?

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[Savanah23]

So you have no power at the fuse? How are you testing this?

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Yes no power at those 2 fuses. I tested it with a 12 volt test light. And I tested the test light itself first.

 

[RawbDidIt]

Yes no power at those 2 fuses. I tested it with a 12 volt test light. And I tested the test light itself first.

These circuits are fed by the distribution box in the engine compartment, have you checked these fuses? I'd look at the one labeled "lighting" to start with.

https://www.autogenius.info/gmc-sierra-mk1-1996-1998-fuse-box-diagram/
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[Savanah23]

These circuits are fed by the distribution box in the engine compartment, have you checked these fuses? I'd look at the one labeled "lighting" to start with.

https://www.autogenius.info/gmc-sierra-mk1-1996-1998-fuse-box-diagram/
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No I have not, come to think of it. I've been messing around under my truck all day and am about to go back out there. I'll check that and get back to you. Thank you by the way for the input

 

[RawbDidIt]

Were you able to find a solution?

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