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Unread 05-07-2014, 10:47 PM   #1
Motas
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Hot wiring 98 TJ

Hey all. Looking for info on how to hotwire a TJ. Now before I get stupid answers it is a race car, I'm not overly worried about security. My ignition key is playing up and to avoid issues on the track id rather just get rid of it than replace it. What I am looking for is information on the most reliable way to bypass the whole system and just have a starter button. It already has a battery isolation switch so no need for an accessories option or anything. I just want to switch the isolation switch on and hit a button to fire it up. Does anyone have a wiring diagram or any tips on this?
Cheers for any help.
Sorry vehicle is a 1998 manual with a 4.0.

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Unread 05-08-2014, 12:52 AM   #2
Rubi4MyMrs
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Here is a thread for a ’99 which is close if not exactly the same as a ’98. Depending on how the isolation switch is set up you will probably need at least one other switch for the ignition since isolation switches usually kill everything by disconnecting the battery from the rest of the electrical system. If your isolation switch is at the battery cable you will most likely want a way to kill the engine (ignition & fuel pump) inside the cab & there are probably times you will want some power on (isolation closed) but not the ignition & fuel on.

http://www.jeepforum.com/forum/f9/fu...start-1554586/

Here is a link to FSMs with wiring diagrams that should also help.

See online read only FSMs here:
http://www.jeep4x4center.com/knowled...ex.htm#service
You may have to go to the bottom of the page & pick Jeep Resources & online manuals if it directs you to home page rather than the knowledge base.
Pick your model & year then on the drop down menu pick the chapter you need.
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Unread 05-08-2014, 06:31 AM   #3
TheBoogieman
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Quote:
Originally Posted by Motas View Post
Hey all. Looking for info on how to hotwire a TJ. Now before I get stupid answers it is a race car
Sorry vehicle is a 1998 manual with a 4.0.
You have a 98' TJ race car
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Unread 05-08-2014, 07:00 AM   #4
mrblaine
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Quote:
Originally Posted by TheBoogieman View Post
You have a 98' TJ race car
Doesn't seem too odd after all the Stock Mod TJ's that are in KOH. Most of them have a battery kill, ignition on, and then starter switch with no keyed ignition.
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Unread 05-08-2014, 07:09 AM   #5
RnEmOvr
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http://www.jeepforum.com/forum/f9/tr...ypass-1556041/
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Unread 05-08-2014, 08:35 AM   #6
Motas
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Thanks heaps will check that link out. When I searched I just found a whole lot of people who lost their keys and no actual answer. I am in australia doing off road racing not rock crawling or koh type stuff. Its in the production 4wd class so mostly just has a cage and some fox shocks. Eventually will move up in classes and hopefully move to ultra4 if it kicks off over here. Also the battery isolation switch kills everything as it switches both alternator and battery. Most accesories now run directly off the isolation switch anyway because its closer than the acc wires were so i only need ignition and starter.
Cheers for the help guys.
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Unread 05-08-2014, 08:42 AM   #7
2k2wranglerx
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I ran an ignition on switch and a push button to start on my one 97. It as a trail rig.

I figured it out with a multimeter. It wasn't a big deal at all. Took 30 mins or so.
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