Ignition switch wires?? - Page 2 - JeepForum.com

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post #16 of 35 Old 08-29-2014, 09:56 AM
Que89YJ
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Electric fuel pump and a 4.3l? We need a little more info on your rig.

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post #17 of 35 Old 08-29-2014, 11:29 AM Thread Starter
CRiNT
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Ya it's converted to a 6 cylinder 4.3L carbureted engine. Who ever did the conversion jacked up the wiring pretty bad. Hense the meltdown haha. But with not using a harness I know exactly which wires go where so it will be easy to diagnose problems. So far it's cost me about $300 which is a lot better than $540 for the harness and fuse box. And ya it's been very time consuming and tidious trying to understand schematics but so far so good haha. And iv got a Haynes and it helped a little but it was more for repair not for refabbing.
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post #18 of 35 Old 08-29-2014, 11:32 AM Thread Starter
CRiNT
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And ya it's got an electric fuel pump but I don't know what kind?
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post #19 of 35 Old 08-29-2014, 12:39 PM
Que89YJ
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The stock jeep is a 4.2L inline 6 and no fuel pump. If you have a fuel pump it would mean that you probably have a throttlebody with a single injector or multipoint injection. Can you please take a pic of your engine and post it?
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post #20 of 35 Old 08-29-2014, 09:56 PM
mike134
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Do you have something under the air filter that looks like this:

Or do you have a fuel rail that looks like this (notice the black pipe running parallel to the valve cover):
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post #21 of 35 Old 08-31-2014, 12:05 PM Thread Starter
CRiNT
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Ya it is fuel injected sorry. But I'm still using the harness to the ECU. So I shouldn't have to mess with any of that right?
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post #22 of 35 Old 08-31-2014, 12:08 PM Thread Starter
CRiNT
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And it won't let me post a pic it says the file is to big.
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post #23 of 35 Old 08-31-2014, 09:08 PM
Que89YJ
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Is it a 4.3 or a 4.2 converted to fuel injection

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post #24 of 35 Old 09-01-2014, 09:08 PM Thread Starter
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It's a 4.3 someone pulled out of a Chevy pickup
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post #25 of 35 Old 09-02-2014, 08:59 AM
Que89YJ
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Go to this thread post #11 and download the factory manuals. They will help you.
http://www.jeepforum.com/forum/f12/1...start-1414928/

If it is stock wiring under the hood. It could be a wiring harness kit. If it is then color references don't mean a thing. You will have to do it the old fashion way. Is the interior harness still in good shape?
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post #26 of 35 Old 09-02-2014, 10:28 AM Thread Starter
CRiNT
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The harness from engine to ecu is still good but I completly scrapped the one from under the dash to fuse box and fuse box to engine bay. I maybe could of salvaged the one under the dash but the guy who did the wiring before had already hacked in to it quite a bit and I decided to get rid of all of it. I guess my question now is which post coming out of the ignition switch goes to the battery and does anything else need to get wired into it besides an inline fuse?
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post #27 of 35 Old 09-02-2014, 11:42 AM Thread Starter
CRiNT
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So here's the ignition switch. I think the middle left post goes to the battery? And thanks for the manual that will come in handy!!
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post #28 of 35 Old 09-02-2014, 12:28 PM
Que89YJ
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Are you going to hand rewire the entire dash?????
You can get a replacement harness for somewhere around $50
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post #29 of 35 Old 09-02-2014, 02:57 PM Thread Starter
CRiNT
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Ya I'm just gonna wire in what I need. Battery, alternator, ignition coil, ignition switch, fuel pump, starter, and fuse box. Then little stuff like lights and radiator fan will get run to fuse box. I'll draw you up a diagram of how I'm going to run everything and post it once I get off work. Then maybe look can look it over and critic it?
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post #30 of 35 Old 09-02-2014, 05:09 PM
Que89YJ
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Sure. It's a lot of work. Almost everything in the dash harness is a necessity. Im not sure what you're feeling with I the engine harness. What circuit caused the harness to toast.

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