Long story short. I had an engine fire. I am replacing all of the electrical harness'.

I decided to out source this cause it would be a huge time suck. I'm mechanically savvy but short on the familiarity with this project as i would have if i were doing it my self.

I have an 87 4x4, w/ AC, and 4ye motor.

I purchased a complete engine and body harness from an 89 4x4 w/ AC.

My Mechanic tells me the "new" harness is from a 3YE motor. (hmm... 89 3y motor??? seems weird.) The project went fairly smooth. We had to convert come connectors for fuel injectors and sensors but thats easy.

The major snag seems to be that the new harness does not have a place for the ignition amplifyer. He wants a 4Ye harness.

1. Does the 3YE not use an amplifyer?
2. Can the Harness be adapted?
3. Or Do I truely Need to find a 4ye harness?

Was the Seller mistaken on his year? Or did they make a 3ye in 89?

Whats my range of parts matching if I need another harness?

To those who suggest get another van. Thats not what i want to hear. I Considered that; and wighed what it would take to re do the modifications and have chosen this route.

Owning these These vans is about a passion; with all the quirks of keeping them on the Road.

Thanks to all who have contributed to these Forums!