Need Help ID Electrical Component on harness - Team Camaro Tech
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post #1 of 6 (permalink) Old Oct 23rd, 14, 08:51 AM Thread Starter
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Mike
 
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Need Help ID Electrical Component on harness

The only thing I left to do for my rebuild is to install the wiring harness and wire my fan relays. Sounds simple, however I'm a first-timer here and I'm trying to make sense of it all. I've been reading through all the tips of Mad Electrical and would like to go with his 'new' system for future scalability.

In the picture below, this is a panel that I removed from my car when I tore it down. A few years ago I had headlight relays installed and the harness cleaned up. I am now trying to understand what I am working with. There is a particular component(circled green) that I'm trying to identify. It has 30A 12v stamped on it. It's wired to the horn relay buss bar and to the headlight relays, I believe it also had/has a wire to battery pos +.

Thanks in advance.
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post #2 of 6 (permalink) Old Oct 23rd, 14, 09:02 AM
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Re: Need Help ID Electrical Component on harness

Although I can't see any picture (or anything circled...) I would guess it is either a 30A Circuit Protection device ('Breaker'/Fuse) or a 30A Master Relay to provide power to the headlamp relay system.
My bet is a 'Breaker'/Fuse

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post #3 of 6 (permalink) Old Oct 23rd, 14, 09:14 AM Thread Starter
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Re: Need Help ID Electrical Component on harness

Thanks John, I knew I forgot to do something.
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post #4 of 6 (permalink) Old Oct 23rd, 14, 09:26 AM Thread Starter
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Re: Need Help ID Electrical Component on harness

I want to wire my system like this diagram from Mad Electrical as I plan on relocating battery to the rear trunk in near future.

My assumption is that my circuit breaker provides more protection than the fusible link between batter pos + and the main dash power wire? As shown in his diagram?
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post #5 of 6 (permalink) Old Oct 23rd, 14, 09:35 AM
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Re: Need Help ID Electrical Component on harness

Looks like an auto resetting circuit breaker for the relay that is next to it.


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post #6 of 6 (permalink) Old Oct 23rd, 14, 09:44 AM
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Wink Re: Need Help ID Electrical Component on harness

Yep, it's a 30A Circuit Breaker.

While I like and recommend Mad products to many, I do wire things slightly different than they do ...
I would recommend you make the 12vdc Pos. feeds to the headlight, and other, relays directly from the "CN-1" Connection Block terminal vs. using the extended feed to the existing Horn Relay terminal.
This allows you to upgrade the power wire gauge specifically for your load(s) and bypasses any 'iffy' connections already in the older system.

Also make sure your 'Sensing' wire source to the alternator, if so equipped, is on this same terminal so it does it's output adjusting based on circuit load/draw vs. 'Battery' voltage.

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