Hard wiring question? - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum
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post #1 of 13 (permalink) Old 11-29-2018, 04:53 PM Thread Starter
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Hard wiring question?

I am trying to hard wire my fan to a switch. Do i need a fuse and relay or can i run wire to a keyed source and not worry about fuses.
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post #2 of 13 (permalink) Old 11-30-2018, 12:31 PM
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I'd go with a 5-pin universal automotive relay (about $6). Switched power to trigger the relay should be covered by the existing fusebox, hot feed to relay from the battery should get it's own fuse, probably 15amp should cover it.. Need some spade connectors for good connections on the relay.



Last edited by Moccasin Ranger; 11-30-2018 at 12:36 PM.
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post #3 of 13 (permalink) Old 06-08-2019, 01:19 PM
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Is the pcm fan control just a ground?



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Originally Posted by Moccasin Ranger View Post
I'd go with a 5-pin universal automotive relay (about $6). Switched power to trigger the relay should be covered by the existing fusebox, hot feed to relay from the battery should get it's own fuse, probably 15amp should cover it.. Need some spade connectors for good connections on the relay.



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post #4 of 13 (permalink) Old 06-08-2019, 10:10 PM
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Is the pcm fan control just a ground?
Yes, you can tie it to the frame if you don't have room on the battery.

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post #5 of 13 (permalink) Old 06-08-2019, 10:27 PM
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Thank you. I'm doing it tonight and tomorrow. If I ever did major engine work I would have replaced the fan control. Not sure where to put the wire from key on? Some where in the fuse box when only the ignition is on that theres power?


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Quote:
Originally Posted by KeystoneMud View Post
Is the pcm fan control just a ground?
Yes, you can tie it to the frame if you don't have room on the battery.

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post #6 of 13 (permalink) Old 06-09-2019, 11:18 AM
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Quote:
Originally Posted by KeystoneMud View Post
Is the pcm fan control just a ground?

That's a good question, and I didn't consider it when I posted the answer above.


If only adding a switch, using the ground from the OEM fan switch is the best option.


If rewiring a fan circuit, the relay is needed to handle the amp draw of the fan. Wiring and switches will overheat in a fan circuit without a relay.
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post #7 of 13 (permalink) Old 06-09-2019, 02:29 PM
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Hard wiring question?-20190609_132244.jpg

I have a 30 amp relay. And 12 volt illuminated rocker switch. I believe the best place to tie in is the accessory wire below the fuse box? Or behind the key? Also going to use shrink wrap where possible and dielectric grease
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post #8 of 13 (permalink) Old 06-09-2019, 07:51 PM
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I'd use the accessory wire, even though it probably means a longer wire.
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post #9 of 13 (permalink) Old 06-09-2019, 10:45 PM
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The very best fix would be to diagnose the problem and have put it back to the way it worked from the factory. I don't know why you want to tie the fan directly to a switch but having things work "as designed" is the best option. I would troubleshoot and go back to factory setup or you could be asking for problems not only now but especially if you decide to sell it. The two best ways to drop the selling price on your atv by half is rig some wiring or add a snorkel, serious red flags.

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post #10 of 13 (permalink) Old 06-10-2019, 12:17 PM
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This is a budget 4 wheeler. The module is $170 which using the manual is the failed component.

Bought for $420 5k+ miles
Caltric carb $45 runs great
Former owner ruined the OEM carb
Brake shoes $15.99
Brake cable $15.59
Front CV axle $34.99
And $15 to get the fan running using the thermo sensor to turn itself on and off.

The seat is like new condition
The screen cleaned up great.
And if any major work is done then yes OEM all the way. Not selling but also not drilling holes in stuff so it can get changed back easily.


Quote:
Originally Posted by Wilbur View Post
The very best fix would be to diagnose the problem and have put it back to the way it worked from the factory. I don't know why you want to tie the fan directly to a switch but having things work "as designed" is the best option. I would troubleshoot and go back to factory setup or you could be asking for problems not only now but especially if you decide to sell it. The two best ways to drop the selling price on your atv by half is rig some wiring or add a snorkel, serious red flags.
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