How to install a universal starter switch.

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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6 Replies

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

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

WRENCHTECH

MECHANIC
20,757 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

RODEOCHIC48

MEMBER
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

WRENCHTECH

MECHANIC
20,757 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