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Old 06-24-2011, 08:48 PM   #1
farmall
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Component ID Please

I have a battery drain on my new to me 71 C30. I have isolated it to what looks like a relay at the 2 Oclock position just off the fuse block on the inside firewall. It has 3 wires attached in a 1 over 2 spade set up like a 7" headlight connection. Larger red and green and a smaller black. I need to figure out if the problem is the component or what the wires go to. I dont have a FSM yet so any help is much appreciated. What is it?
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Old 06-24-2011, 08:54 PM   #2
Tx Firefighter
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Re: Component ID Please

Sounds like the horn relay.
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Old 06-24-2011, 09:03 PM   #3
bmfm64
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Re: Component ID Please

Pics?
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Old 06-24-2011, 10:19 PM   #4
VetteVet
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Re: Component ID Please

does this look like the little buggar?

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pull the connector off and listen for a click. If you hear one it means the black wire is grounded up in the steering column and the horn was blowing so the PO probably disconnected the horns and didn't realize that the relay would stay energized and pull juice from the battery. See if the horns have been disconnected.
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Old 06-25-2011, 01:57 AM   #5
farmall
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Re: Component ID Please

That is it! I will dig into it. Thanks everybody for the help.
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1971 C30 157" 350 4spd 10' Flatbed
81 GMC K30 CnC 9' Flatbed 454 T400
89 GMC Jimmy Stock https://67-72chevytrucks.com/vboard/...d.php?t=810958
71 LT1 Convertible, 72 Coupe
69 CJ5, 75 CJ6, 67 M715, 72 M35A2 Bobbed, 95 XLC2
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Old 06-25-2011, 01:09 PM   #6
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Re: Component ID Please

If your horn works, and you can feel (with your hand) the relay "click", then it's okay. If it is hot to the touch while the horn doesn't work.....that's different.
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