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Username Post: Fan Relay - HIghway 22 - 40 vs 70        (Topic#338183)
56_Kruiser 
"5th Year" Silver Supporting Member
Posts: 2596
56_Kruiser
Loc: Lawrence, KS
Reg: 09-23-05
08-09-16 07:46 PM - Post#2644870    

I am using a Highway 22 system, which as I understand it comes with a 40 amp fan relay (or fuel pump...but I have it wired to use for the fan).

I had sent an email to the fan mfgr asking what the 3 wires from the fan are for. (No docs came with the fan). Below is their reply:

  • Quote:
What kind of relay system are you using?

The gray and brown are hot wires (2 speed motor) and black is ground that needs to go directly to the battery (core support and frame are not good ground).

Most of my customers tie the 2 hot wires and use it as an all time high speed with my FR-70 wiring kit and temp. switch. You would need a 70 amp relay, 10 gauge wires and a fuse or circuit breaker of no more than 40A.



That information makes me uncertain about using the relay in the Highway 22. Can I just replace the 40 amp relay in it with a 70? What about the circuit breaker comment?

BTW...I do plan to wire in a trinary switch.



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Edited by 56_Kruiser on 08-09-16 07:47 PM. Reason for edit: No reason given.

 
aawtech 
American Autowire "Site Sponsor"
Posts: 4975

Loc: Bellmawr, NJ
Reg: 09-11-06
08-10-16 06:18 PM - Post#2645038    
    In response to 56_Kruiser

  • 56_Kruiser Said:
I am using a Highway 22 system, which as I understand it comes with a 40 amp fan relay (or fuel pump...but I have it wired to use for the fan).

I had sent an email to the fan mfgr asking what the 3 wires from the fan are for. (No docs came with the fan). Below is their reply:

  • Quote:
What kind of relay system are you using?

The gray and brown are hot wires (2 speed motor) and black is ground that needs to go directly to the battery (core support and frame are not good ground).

Most of my customers tie the 2 hot wires and use it as an all time high speed with my FR-70 wiring kit and temp. switch. You would need a 70 amp relay, 10 gauge wires and a fuse or circuit breaker of no more than 40A.



That information makes me uncertain about using the relay in the Highway 22. Can I just replace the 40 amp relay in it with a 70? What about the circuit breaker comment?

BTW...I do plan to wire in a trinary switch.





That is a 40 amp relay on the panel and it cannot be swapped out with a 70. that is too much amperage on the panel and would carry too much heat. You'll want to wire that by itself. We toyed with the idea of trying to design on with a 70 until we looked into the heat factor. NO GOOD, BAD.

Donny




 
56_Kruiser 
"5th Year" Silver Supporting Member
Posts: 2596
56_Kruiser
Loc: Lawrence, KS
Reg: 09-23-05
08-11-16 07:12 AM - Post#2645113    
    In response to aawtech

Thanks. Appreciate the input.

I'm now thinking I can use the output for the fan from using that relay that is already hooked up as a trigger for the 70 amp relay. What I'm not sure about is if the 70 could use a positive trigger.



1956 Belair Convertible

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aawtech 
American Autowire "Site Sponsor"
Posts: 4975

Loc: Bellmawr, NJ
Reg: 09-11-06
08-11-16 10:34 AM - Post#2645135    
    In response to 56_Kruiser

  • 56_Kruiser Said:
Thanks. Appreciate the input.

I'm now thinking I can use the output for the fan from using that relay that is already hooked up as a trigger for the 70 amp relay. What I'm not sure about is if the 70 could use a positive trigger.





No, don't do that. Don't really want to trigger a relay with a relay. LOL. Give me a call and we'll talk this out. Let me see what else you are doing. The relay might be able to be used for something else. Just use the 70 amp with the fan as a stand alone. There are other places on the panel that we might be able to pick up an ignition trigger. Don't really want to trigger a relay with a relay. LOL. Send me a PM and I'll give you me direct extension, OK?

Donny




Edited by aawtech on 08-11-16 10:34 AM. Reason for edit: No reason given.

 
56_Kruiser 
"5th Year" Silver Supporting Member
Posts: 2596
56_Kruiser
Loc: Lawrence, KS
Reg: 09-23-05
08-12-16 06:53 AM - Post#2645282    
    In response to aawtech

OK. I'll PM you this afternoon. I'm heading out for a bit this morning.



1956 Belair Convertible

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