Well, that didn't work!!!! - Team Camaro Tech
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post #1 of 6 (permalink) Old Apr 15th, 18, 08:40 PM Thread Starter
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Well, that didn't work!!!!

Ok, So I have followed the attached diagram to get my Vintage Air compressor signal to trigger a series of relays to turn on a secondary electric fan and use the Holley Sniper A/C Ground sensor to bump my RPM by 100. It didn't work. lol! the only thing I did different was that I ran Pin-87 on the middle bottom relay directly to my compressor. I didn't plan on using the A/C RPM Shutoff function.

Any Ideas? I'm at a loss....
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post #2 of 6 (permalink) Old Apr 16th, 18, 05:11 AM
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Re: Well, that didn't work!!!!

I think the relay schematic is wrong. Generally, a de-energized relay will have continuity through 30 to 87, not 87a. Check?
Present relay, upper right corner, is shown in energized position. So, everything you're trying to 'turn on', should be wired to 87a.

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post #3 of 6 (permalink) Old Apr 16th, 18, 09:51 AM Thread Starter
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Quote:
Originally Posted by Everett#2390 View Post
I think the relay schematic is wrong. Generally, a de-energized relay will have continuity through 30 to 87, not 87a. Check?
Present relay, upper right corner, is shown in energized position. So, everything you're trying to 'turn on', should be wired to 87a.
Lol! I thought 87a was normally closed?

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post #4 of 6 (permalink) Old Apr 16th, 18, 12:04 PM
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Re: Well, that didn't work!!!!

Quote:
Originally Posted by rtchaney View Post
Lol! I thought 87a was normally closed?
Correct. 87 is normally open until energized by 85,86

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post #5 of 6 (permalink) Old Apr 17th, 18, 05:13 AM Thread Starter
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Fixed it! I had the compressor wire and the a/c switch wire swapped. Sometimes a fresh look and sleeping helps. Thank you gentlemen. At least now I can say, for certain, that the diagramed circuit is good and functions propperly; even if I don't!
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post #6 of 6 (permalink) Old Apr 17th, 18, 06:20 AM
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Re: Well, that didn't work!!!!

Very good

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