Where can I get schematics?

[60 Biscayne]

I bought a 2004 Wrangler 4.0 engine, auto trans & transfer case complete with harness, computer etc. It was cut where it came thru the firewall.
I'm putting it into my 1989 Wrangler that now is a 4.2 five speed etc.
Where can I get the wiring schematic on the 2004 & my 1989 so I can try to figure out what has to be done.
Any help will be gratefully apprechiated
Thanks,
Jim

 

[TerryMason]

Don't know a thing about these guys, but they seem to have what you want:

Jeep - Downloads

These guys have been around for a while, and have the paper version for normal price:
Jeep Service Manuals

 

[Bounty__Hunter]

Get a Factory Service Manual (FSM) for both.