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Ford Ranger ECM wiring

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Ryan:
Here is how you eliminate all the wiring inside the vehicle. The circuits shaded in yellow in the diagrams are all that is needed for the ECM to function. Stock gauges will no longer work, you will remove about 20 pounds in wiring.

These circuits share common wires to the circuit number.

Circuit 361 Red wire, Pin 97 and 71 Switched power, usually ignition switch on dash
Circuit 570 Black with white stripe, Pin 51,76,77,103. Ground. Make sure that this goes to a clean body or frame ground.
Circuit 37 Yellow wire, Pin 55, this is a constant keep alive power wire, hook directly to battery with a 10a fuse. Do not run thru the battery disconnect, this keeps your computer from losing its learned values.

These are the only 3 wires you need. I cut the body harness off at the large connector on the drivers side of the engine, leaving about 6" of the harness as pigtails,  and used a continuity tester to find the wires on the connector that correspond to the ECM wires.

The starter does not need the extra starter relay, you can run a push button 12v to the small post on the starter solenoid attached to the starter.

Check to see if you get power at the middle pin of the connector at the coil. If not then splice in an ignition power to the middle wire on the front coil pack connector.

Update 9-14-15

Just an update, we wired my brolite today using this write up and found that there was one wire left out which is what caused Michael to not have power at the coils. From the main bulkhead connector, you need to keep the solid yellow, solid red, two black wires with white stripes, and the one forgotten from the writeup is red with a green stripe. This last one is your coil power

M4wdFab:
i cant get mine to run.

really wish i could find non blurry usable pinout diagrams for the 2.3 ecm

smells like fuel in exhaust after cranking. 

everything checks out.   im not getting any spark. 



Red wire (ignition), yellow wire (keep alive), and ground found from Engine block plug.  all pins match to above on ECM connector.

Ryan:
Check ground from body to battery and engine.

Ryan:
I can hi res scan it and post link.

Ryan:
https://www.dropbox.com/s/ec7rvc9fvew3fzz/Hi%20res%20001.jpg?dl=0

https://www.dropbox.com/s/01vh24jqjzvv5oc/Hi%20res%20002.jpg?dl=0

https://www.dropbox.com/s/07bl3xy5k65b96x/Hi%20res%20003.jpg?dl=0

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