I took on a project to finish a roadster for a friend. it is using a stock 5.0 from a 89 mustang. He is keeping the EFI and computer harness. for the rest of the wiring it is a Ron Francis harness.
My problem is marring the stock harness to the RF harness. Has anyone done this? What wires do I need to connect to the RF harness?
DaleG
07-07-2014, 06:34 PM
From the Ron Francis Chassis Harness instructions:
Fuel Injected Engine
Note: If running a Coyote Engine, refer to the Coyote Fitment instructions for Roadster or Hot Rod.
Leave the coil and crank wires in the footbox and connect them to the power wires for the EFI harness according to the EFI harness instructions.
The COIL/EFI wire is a KEY ON - RUN POWER wire.
The EFI CRANK POWER wire is the START POWER wire
If the EFI harness uses its own wires for the fuel pump, remove the fuse for the fuel pump from the fuse panel and cut and solder the fuel pump wire from the EFI harness onto the chassis harness wire.
Connect the Speed sensor wires to the EFI wiring harness.
Hope this helps you out some.
Cheers, Dale