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post #1 of (permalink) Old 12-11-2007, 04:27 PM Thread Starter
 
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3 wires to a '90 yj gas tank

Just trying to confirm the past owners wiring of an inline fuel pump. There are three OEM wires going to the stock gas tank and I was wonderin if anyone could give me a diagram or tell me what color is for what (he just tapped into two of them w/ those elchepo splicers clips). Its got a 350 TPI engine so the pressure and voltage have gotta be up to snuff for the pump. Also, If this is wiring for a stock intank pump, wouldnt there be a relay nearby?
Is it acceptable to leave a stock pump in the tank and then use a inline?
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post #2 of (permalink) Old 12-11-2007, 06:08 PM
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I just re-assembled my 1990 and rechecked all the wiring cause I run a 302/NV4500/Atlas super low gear case. I installed the 302 pump in the existing plastic 20 Gallon tank after I made a bracket to mate it all together. Anyway in answer to your questions my wiring clolors were lite brown, it was for the gas gauge in the dash, the black was the ground wire to complete the circuits, and the orange was for the fuel pump. I have nooooo idea where the stock relay's were installed, but I installed the relays and all the important stuff for the 302, back under the hood for easy access for me. I removed all un-nessary wiring, plugs, jacks, etc. to make it simple. I hope this helps you out.

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post #3 of (permalink) Old 12-12-2007, 08:32 AM
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Was this originally a 4.2L or a 2.5L jeep?

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post #4 of (permalink) Old 12-12-2007, 02:00 PM Thread Starter
 
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it was a 4 banger. Does that mean there were different wires?
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post #5 of (permalink) Old 12-12-2007, 04:19 PM
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Nope, them colors I gave you were for a 2.5 litre engine.

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post #6 of (permalink) Old 12-13-2007, 09:02 AM
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Quote:
Originally Posted by jcs64 View Post
it was a 4 banger. Does that mean there were different wires?
Only reason I asked is because in 1990, the 4 banger was fuel injected and the six cylinder was carbed... in tank pump vs engine mounted mechanical pump.

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post #7 of (permalink) Old 12-13-2007, 02:15 PM Thread Starter
 
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ah, good to know, any idea were the stock relay would have been for the fuel pump?
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post #8 of (permalink) Old 12-13-2007, 08:15 PM
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Yep, right side of the battery.

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