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Old 11-14-2019, 03:24 AM   #5
hotford
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Join Date: Jan 2005
Location: Durham/Canada
Posts: 236
Re: 2004 Mach 1 Engine Harness

Quote:
Originally Posted by Fay4927@yahoo.c View Post
Hi, thanks for the reply. Here is what I have. I am installing a 2004 Mach 1 engine in a 1966 mustang. I believe the engine was out of a manual, not sure. I have the engine matted to a 4R75W. The engine has most of the engine harness attached. Part of the front engine harness that connects to the AC and the Crank Position sensor is broken. Art in California did a wire diet on my dash harness (PCM harness that connects to the engine harness and the CCRM (he did a great job with the diet and labeling)). After tying to connect the PCM harness to the engine harness, I learned that there is one less connection on the engine harness for the automatic transmission harness. Additionally, there are a couple connections missing on the front of the engine harness that would connect to the PCM harness.
I mentioned the GT engine harness, thinking that I would purchase a complete one if I could not get the 04 Mach 1 engine harness to work.
Any thoughts or diagrams for the 04 Mach 1 engine harness?

Everything so far on the engine is Mach 1. the PCM is 04 Mach 1 Automatic. By the way, I have a painless (not really painless) chassis harness.
Manual motors have a 8 bolt wheel, auto are 6 bolt, you can repair the connectors on both the A/C and Crank sensor, make sure when repairing the Crank sensor that the shield covering goes almost to the connector.
Auto harnesses have the main 36 pin connector and three connectors, which stick will have two with the main 36 pin.
honestly a GT harness can run your mach engine and would be easier to aquire with the auto harness.
the only difference is the coil wires need to be reversed and the GT has no Knock sensors...most tuners shut them off anyways, but you will need to run a GT auto PCM as the Mach will have some pins in different locations but you can move some of the pins to accommodate... I have both harness diagrams if you need them.

Chris.
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1982 GT
2003 Mach 1
2003 Marauder
2011 Shelby GT 500

Last edited by hotford; 11-14-2019 at 06:11 AM.
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