Location for relays for fan fuel pump etc...
I am mocking up items in the engine bay of my stocker build. i will be running a electric fan and water pump. The instructions say yo have the relays as close to the power source as possible. I would rather have all of my electronics in a single location (most likely in the passenger area.) Can I get some opinions on this matter.
Thanks Dave. |
Re: Location for relays for fan fuel pump etc...
Where's your battery? Mine's in the trunk but the main power feed still runs under the car to the firewall so the driver's compartment is close to the power source. Main thing is to use the proper size wire for the distance and amps you have to run. I built a circuit board with all relays to run stuff on my Mustang that had been giving me electrical issues. It still had street wiring left over from last year. It's under the glove box on the passenger firewall and drives everything. Dual fan motors, fuel pump, water pump, vacuum pump for power brakes, lights, you name it. Not pro looking but does the job. I have a map to remember where everything is wired in.
I used prewired relays from Pico wiring that come in sockets with color coded 14 gauge wire. Easy to work with and very high quality. I had worked piece by piece in wiring this car up to this point, but I took time and designed the wire board on paper and built it on a workbench. I recommend the latter approach. |
Re: Location for relays for fan fuel pump etc...
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Re: Location for relays for fan fuel pump etc...
Put the relays close to your power suckers and in an accessible spot.
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Re: Location for relays for fan fuel pump etc...
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To each his own, but I put my w/p and fan switches to the driver's left so he can access them in the staging lanes. Of course,I don't buy switch panels to hang off the roll cage. Of course I usually don't have a roll cage anyway. |
Re: Location for relays for fan fuel pump etc...
David…I have a relay bank in the glove box. A lot of the prewired relays can be clipped together and mounted neatly with a small sheet metal bracket. MB
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Re: Location for relays for fan fuel pump etc...
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The fuel pump, fan and water pump. |
Re: Location for relays for fan fuel pump etc...
I have everything mounted behind the glove box door...switches are on the driver's side.
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Re: Location for relays for fan fuel pump etc...
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Re: Location for relays for fan fuel pump etc...
Yes, all nice and neat looking, but DC power diminishes with wire length.
Also, as stated , the w/p and fan both use a bunch of amps. Best to keep the the wire large and the run short on those items, in my opinion. |
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