How to install a universal starter switch.

Tiny
RODEOCHIC48
  • MEMBER
  • 1993 JEEP CHEROKEE
  • 23,500 MILES
Jeep will not start. Replaced starter and battery cables. It has a new battery. Turn key on, no start or clicking noise. I would like to bypass the ignition switch. Cannot find wiring diagram for this model without buying really expensive repair manual, cannot afford this. How and where do I install the starter switch. Model is a dorman 85935 universal starter switch. Any help would be appreciated.
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Tuesday, May 1st, 2012 AT 9:57 PM

6 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Is that just a big pushbutton with 2 connections?
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Tuesday, May 1st, 2012 AT 10:08 PM
Tiny
RODEOCHIC48
  • MEMBER
  • 5 POSTS
Yes, it's the dorman model #85935 universal starter switch
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Tuesday, May 1st, 2012 AT 11:47 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You can't simply do that. This is a sophisticated electrical circuit that is likely integrated with an immobilizer security system that cannot be bypassed.
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Tuesday, May 1st, 2012 AT 11:52 PM
Tiny
RODEOCHIC48
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  • 5 POSTS
Oh jeez. Any guesses? The starter was replaced and the battery cables along with the ignition lock cylinder. Still won't start. Any way to bypass the ignition switch? When I turned the key, there is no sound.
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Wednesday, May 2nd, 2012 AT 12:28 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Changing the ignition lock would have done nothing for the electrical circuit. Your problem may not even have anything to do with the ignition switch.

There is also an early and late design with a relay that is operated by the PCM.

Here are the diagrams but you need electrical knowledge to read them correctly.

Early production design

http://i1198.photobucket.com/albums/aa448/Wrenchtech/41824249.gif

late design

http://i1198.photobucket.com/albums/aa448/Wrenchtech/41814033.gif
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Wednesday, May 2nd, 2012 AT 12:34 AM
Tiny
RODEOCHIC48
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Thank You so much. You have been most helpful. Hope you have a great night.
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Wednesday, May 2nd, 2012 AT 4:08 AM

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