Generally, the ICM in a 1989 Wrangler is either:
* Mounted on the distributor: This was common in some engine configurations. The ICM is a small electronic module often attached directly to the distributor itself.
* Separate from the distributor: In other cases, it was a separate unit, possibly located near the coil, firewall, or even under the hood near other engine components. It might be secured with bolts or clips.
To find it with certainty:
1. Consult your Jeep's repair manual: This is the best resource. It will have a diagram showing the location of all major components, including the ICM.
2. Use a wiring diagram: A wiring diagram for your specific engine will show where the ICM's wiring harness connects. Tracing the wires can lead you to the module.
3. Online searches: Search for "[Your Engine Year] Jeep Wrangler ICM location" – replacing "[Your Engine Year]" with the specific year and engine type. Be cautious about relying solely on online information, as locations can vary.
4. Visual inspection: Once you know the approximate area, carefully examine the engine bay. Look for a small, rectangular or square-shaped module with wiring connected to it. It may be labeled.
Without knowing your engine size, I cannot give a more precise location. Using a repair manual specific to your Jeep is highly recommended.
