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Help me find a wire under the hood

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Old 09-02-2013, 07:41 AM
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Default Help me find a wire under the hood

That's it, I just need to find a wire in the engine compartment of my 94 ZJ 4.0. I've installed electric fans from a Ford Contour, and now I just need to find a 12v switched line for a TEMPORARY solution for turning on the fan when I turn the key on. I am adding a thermostatically controlled switch later, as well as a lead from the A/C to switch it on when the air is on. I'd rather not run a wire into the cabin to find a switched source, since this is only going to last me 2 weeks. So, any help would be appreciated.
Old 09-02-2013, 10:11 AM
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You'll either need a wiring diagram (best) or a test light (meh).
Old 09-02-2013, 10:47 AM
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Yea, I'm not gonna figure out a wiring diagram by this evening. Been looking for an easy access with my multi meter
Old 09-02-2013, 02:48 PM
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I really hàte to run a wire into the cab temporarily..but that's how its starting to look
Old 09-02-2013, 02:55 PM
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The easiest place to run a wire into the cab is thru the throttle cable grommet.
Old 09-02-2013, 03:35 PM
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Originally Posted by dave1123
The easiest place to run a wire into the cab is thru the throttle cable grommet.
Thanks, man. I know I can find a wire to hook it to easy under the dash. Grommet sounds painless.
Old 09-02-2013, 03:49 PM
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An easy way to push the wire thru is to tin (solder) the end to make it stiff, poke it thru the grommet, and pull what you need thru. The hole will be small and practically self sealing when you're done. You can tap into the power outlet on the dash for source, cigarette lighter for trigger for the relay. The cigarette lighter is only hot in accessory and ignition. The power outlet is fused 25 amp.
Old 09-02-2013, 04:10 PM
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Originally Posted by dave1123
An easy way to push the wire thru is to tin (solder) the end to make it stiff, poke it thru the grommet, and pull what you need thru. The hole will be small and practically self sealing when you're done. You can tap into the power outlet on the dash for source, cigarette lighter for trigger for the relay. The cigarette lighter is only hot in accessory and ignition. The power outlet is fused 25 amp.
Good idea about the cigarette lighter. I don't necessarily need 25 amps, but its sure an easy wire to find!
Old 09-03-2013, 05:37 AM
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Dave, appreciated your input. I got the wire hooked up 20 minutes after my last post and took it for a spin. Those electric fans move some air! My A/C was blowing much colder than before even!
Old 09-03-2013, 05:13 PM
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Always glad to help. My opinions are just that, my opinions, and not to be taken as fact. Bottom line, you need to do your own research.
Old 09-03-2013, 06:16 PM
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Originally Posted by dave1123
Always glad to help. My opinions are just that, my opinions, and not to be taken as fact. Bottom line, you need to do your own research.
Research was done. I was looking for experience. You nailed it.
Old 09-03-2013, 10:43 PM
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Well, thanks. I've only been working on cars for 53 years. People tell me I'm old fashioned. Experience does count for something, I guess.
Old 09-04-2013, 07:31 PM
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Someone asked for pics. I wish I had more. The electric fan came from a 98-99 contour. Cut some wires, three 10mm bolts and I took the bolt that was holding the fan ground wire, and I'm glad I didn't cut that one. This is a pic of both fans and the shroud
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Old 09-04-2013, 07:35 PM
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I wired up a 40 amp relay ($4.99) straight to the battery, and ran the trigger wire to the cig lighter like Dave suggested
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Old 09-04-2013, 07:41 PM
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You can see I've got plenty of clearance. I never took the radiator out, like I've seen in other conversion threads. Just cut the tabs on the side, and trim a little for clearing the steering box. Marked and drilled holes to bolt some Home Depot brackets to the e-fan, and hang it from the old fan shroud bolts
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