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installed boost gage no power at all

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Yesterday I installed a boost gage on my truck. One wire needed to be connected to a 12v ignition power wire.  I spliced the wire into the red wire coming down from the ignition. When I did this sparks ignited. I disconnected the splice but now when I try and start the truck there is no power.  Nothing.  Any ideas out there? Thanks for the time fellas.

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Have you checked to make sure all the fuses are good?

Also what year truck is it?

  • Author

I did check the fuses and they don't look blown. Its a 2000. Any idea what fuse could be bad that wouldn't let the truck get any power? Or any relay maybe?

Fuse #2 in the PDC (fuse box under the hood in engine compartment) is for the power to the ignition switch.

 

When hooking up gauges a good easy way to hook the wires up is to use a "add a circuit", it plugs in to a fuse slot and then gives you an extra fused circuit.

  • Author

Ok, Ill have to pick that up.  Thank you. Since I cut into the wire should I re connect it? it only punched in the wire barely.

They are best checked with a Ohm meter because a lot of times it really tough to see blown fuses.

You can also check both sides of the fuse with a test light. There are two silver colored spots on the top of the fuse. Touch a test light to each side and if it only lights on one side the fuse is bad.

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    • Owner

    You can also check both sides of the fuse with a test light. There are two silver colored spots on the top of the fuse. Touch a test light to each side and if it only lights on one side the fuse is bad.

     

    But for the larger fuses in the PDC you can do that the only way to test is to pull them out and ohm test each one.

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    But for the larger fuses in the PDC you can do that the only way to test is to pull them out and ohm test each one.

    Yea, I forgot that...... :duh:

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    • Author

    Thanks a lot fellas. I will dive into the fuses hopefully this week if not over the weekend. Ill keep you posted. Thanks again, you guys are always helpful.

    • 3 weeks later...
    • Author

    well at last I have power and boost gage is pretty :woot: I had replace just about everything and found out is was a 40 and 50 amp fuse blown. Thank you for the help and have a safe new year!!!

    So, what were the fuses for that were blown?

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