Engine Wiring Harness Replacements

[SPDBOSS]

American Muscle says the M-12508-M50 engine wiring harness will not fit a Boss, only a GT, which makes no sense. So I called them and they assured me it would not fit a 2012 or 2013 Boss. I then asked FRPP and they said the M50 harness and the improved camshaft actuators will work on my VIN specific Boss. So my question, can anyone confirm that they have successfully installed the M50 and the improved actuators on a 2012 Boss? I would not want to spend money on new parts and the PRS upgrade only to not have it fit or work properly.

 

[TMSBOSS]

I installed the M-12508-M50 harness on my 2012 Boss along with the new actuators a month ago. Works great

 

[SPDBOSS]

I installed the M-12508-M50 harness on my 2012 Boss along with the new actuators a month ago. Works great

Great to hear about your success. Did you also do the PRS upgrade? If not, why not?

 

[TMSBOSS]

There were several failures of the 2012 wiring harness where the only solution was the PRS upgrade. Later Ford upgraded their stuff and from what I recall there were few if any failures with the new harness.
I damaged an actuator and subsequently upgraded all and the harness. It didn’t break as much as I broke the part in reassembly after a valve spring change.
Happy with the new parts so far.

 

[SPDBOSS]

There were several failures of the 2012 wiring harness where the only solution was the PRS upgrade. Later Ford upgraded their stuff and from what I recall there were few if any failures with the new harness.
I damaged an actuator and subsequently upgraded all and the harness. It didn’t break as much as I broke the part in reassembly after a valve spring change.
Happy with the new parts so

There were several failures of the 2012 wiring harness where the only solution was the PRS upgrade. Later Ford upgraded their stuff and from what I recall there were few if any failures with the new harness.
I damaged an actuator and subsequently upgraded all and the harness. It didn’t break as much as I broke the part in reassembly after a valve spring change.
Happy with the new parts so far.

So you track your 2012 Boss, had harness related issues, upgraded to the FRPP M50 plus actuators, did not do the PRS upgrade, and have not had any more harness issues? About how much track time do you have on the M50?

 

[TMSBOSS]

Yes, I track my car. No I did not have harness related issues. What happened was I broke one of the actuators, upgraded all when I replaced the one and then had to upgrade the harness to match the new style plug in the upgraded actuators.

 

[TymeSlayer]

So as I still am in search of fixing my gremlin issue and not having much luck so far with Ford. I am curious what's happening to the car when this problem occurred? I maybe be reaching for straws here because I'm not getting any codes when my car shuts down.

 

[TMSBOSS]

TS

In my case the Owner messed up the motor. No symptoms. He reassembled the cam actuator incorrectly bending the actuator rod against the cam phaser.

I can't believe the owner did this, Signed "The Driver".

 

[SPDBOSS]

I get the P0010 code, camshaft position actuator error, bank 1. Car does not go into a limp mode, but I wont track the car if the code is set or pending.

 

[302 Hi Pro]

From your signature pic, it looks like you have a 2011/12? If so have you performed the crank angle position sensor TSB?

 

[SPDBOSS]

From your signature pic, it looks like you have a 2011/12? If so have you performed the crank angle position sensor TSB?

No, have not performed the crank angle TSB.