Horn relay - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

 
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post #1 of 6 (permalink) Old Apr 27th, 14, 8:14 PM Thread Starter
Duane
 
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Unhappy Horn relay

I have a72chevelle ss.car was starting fine but all of a sudden it won't start.turn the key and the lights go out and one wire that goes from the horn relay down through firewall melted. Nothing on the starter and the battery has a good charge.does anyone have an idea what's wrong.iam not good with electrical.
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post #2 of 6 (permalink) Old Apr 27th, 14, 8:33 PM
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Re: Horn relay

The wire that feeds the horn relay from the starter is a fusible link at its starter end.
Sounds like a bad short somewhere.

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post #3 of 6 (permalink) Old Apr 27th, 14, 8:45 PM Thread Starter
Duane
 
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Re: Horn relay

Dean suppose the starter or solonid shorted out.
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post #4 of 6 (permalink) Old Apr 27th, 14, 8:55 PM
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Re: Horn relay

I doubt that, the short would be downstream OR in that wire itself.
But, just about everything is downstream from that main feed wire, however most are fused separately which would eliminate any load that still has a good fuse.

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post #5 of 6 (permalink) Old Apr 27th, 14, 9:05 PM Thread Starter
Duane
 
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Re: Horn relay

Would that wire go to the fuse block marked iignition.u would think that fuse would blow.like I said I am not good with electrical.thanks for your input
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post #6 of 6 (permalink) Old Apr 27th, 14, 9:10 PM
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Joe
 
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Re: Horn relay

Can you post a picture?

You say "goes down thru the firewall", this sounds like the main power feed to the interior.
This is protected by a 16 ga. fusible link---the horn relay has a threaded stud, this is main 12 volt power. The fusible link is connected here, it is a special wire that blows during overload without causing a fire.

So it goes horn relay stud to fuse link to 12 ga. red wire into the bulkhead connector (the thing that plugs into the firewall to allow power inside .

The red 12 ga. Is spliced to the fusible link and this splice is in the form of a little rubber barrel encasement.

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