post #1 of Old 11-06-2006, 06:46 PM Thread Starter
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Engine Wiring Diagram for 1990 Wrangler 4.0

I need a diagram that shows the wiring for a 1990 Jeep Wrangler with a 4.0 liter. Particularly the wires that go to the electric choke connector. The jeep I bought had a fire under the hood and the wiring was partially replaced but they hooked up a manual choke. I have bought a new carb for it and would like to hookup the electric choke so I need to know the wire colors for it. Please help somebody. Thanks.

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post #2 of Old 11-06-2006, 07:45 PM
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1994 YJ Wrangler 
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1990 wrangler with a 4.2 unless someone swapped in a 4.0??

Black w/ white tracer comes out of the loom right above the back rubber gromet on the firewall
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post #3 of Old 11-06-2006, 08:32 PM
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post #4 of Old 11-06-2006, 08:38 PM Thread Starter
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Are you talking about the single wire that clips onto the choke or the double wire plug that has a green and a black wire coming to the plug?
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post #5 of Old 11-06-2006, 09:48 PM
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1989 YJ Wrangler 
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don't know if any of these willw ork but i pulled them off alldata

if you know specifically what you need i can try to find a schematic or diagram for you.

'89 Wrangler, 4.0/AW4, 106" Wheelbase, SOA, custom XJ packs, 2" Body. Front High Pinion Dana 44 w/yukon super-joints, chromo inners and outers, and a Lincoln Locker. Rear Dana 60 w/Yukon 1.5" 35 Spline chomo shafts and detroit locker. 5.38 Yukon Gears. Hydro-Assist, 39.5x18" Boggers on 15x12 RockKrawler's w/ 2.75" of backspacing. Comp cut, tube fenders, custom bumpers and rock sliders, fuel cell, CB, Stewart Warner Gauges, SmittyBilt XRC8 Winch, 140 Amp CS-144 Alternator, Electric Fan, and a cooler of beer. 3897 lbs

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post #6 of Old 11-07-2006, 04:28 AM
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1990 YJ Wrangler 
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All it needs is 12 volts from a switched source. Either get a test light out and find a wire that is hot when the switch is in the run position and splice into, or just run a new from the fuse panel.

1990 Jeep YJ 4.2
Howell EFI, BDS 3.5" lift, M.O.R.E 5/8" Boomerang shackles, 1" Daystar BL, 1" JKS MML, TFI, Crager soft 8s w 35" Dunlop Mud Rovers, Ford 8.8, 4.88s, Dana 30 E-Locker, Terra Flex SYE, Tom Woods CV shaft, Warn M8000.
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