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Automatic harness with manual truck


joshh

New Member
Joined
Jun 8, 2025
Messages
2
City
Idaho
Vehicle Year
1997
Transmission
Manual
Hey there, I swapped a 97 4.0 automatic engine into 97 4wd standard ranger, I did not swap the old engine harness to the automatic, and now the truck won't start with key (fine with a jumper and switch), also the abs, cruise, speedo and odo do not work. The automatic harness has an extra plug the standard truck does not accept, do I need to jump wires in that plug on the engine side?
 
Or do I need to swap the standard harness off the old engine?
 
I'm confused. Was any wiring moved in the truck that won't start now? Was it 4.0 originally?
 

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