2018+ Mustang Mach 1 Official Bumper Swap info and Parts list.

[Dark Side]

Has anyone been able to find a part number for the brake ducts yet? I'm coming up dry.

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[Applied Carbon]

The GT350 fenders with the Mach 1 front bumper is FAT. Are any of the aftermarket options decent or should I go with OEM if I end up going that way?

 

[Silent niGhT '18]

One more thing I wanted to share, I still don’t have working turn signals because I didn’t want to cut up my factory wiring harness. Wether you use the factory or Diode Dynamics turn signal set, you will need to do some custom wiring to connect the 15-17 turn signals to the 18+ wiring harness.

Doing some research I found Starkey Products which has an 18+ fog light connector pigtails set. I reached out to them to see if they could help me out with a custom solution for my special use case. They were able to provide the mating connector to the 18+ wiring harness. Once I get the parts in, along with the wiring diagram that @V8der has provided I should be able to get everything setup as close to a factory setup as I can.

I was curious if you ever came up with a solution to wiring up the turn signal/ running lights without cutting the factory wiring? I came across a complete Mach 1 front bumper takeoff from a '23 Mach 1 at a price too good to pass on and was going to get the wiring situated while I wait on the bumper to be painted to match my car. The wiring on the Mach 1 one turn signal consists of a 3 wire terminal with Blk/Gry, Brn/Yel, and Yel/Vio wires and then a 2 wire terminal with Vio/Wh, and Blk/Gry wires which I assume is for the running lights. These 2 merge into 1 harness attached near where the bumper mounts to the fender. My plan was to make a harness to bridge the 5 wire to the 6 wire harness that comes on the '18+. Ive got the proper connectors to make the connection. Based on the wiring diagrams posted the Brn/Yel wire is for the the parking lights on both but it looks like the Mach 1 park lights are powered from the 2 wire Vio/Wh wire. So my confusion is the Mach 1 wiring diagram says the park lights are the Brn/Yel wire so what does the Vio/Wh wire that is actually on the the Mach 1 harness go to?

 

[Boyd]

I was curious if you ever came up with a solution to wiring up the turn signal/ running lights without cutting the factory wiring? I came across a complete Mach 1 front bumper takeoff from a '23 Mach 1 at a price too good to pass on and was going to get the wiring situated while I wait on the bumper to be painted to match my car. The wiring on the Mach 1 one turn signal consists of a 3 wire terminal with Blk/Gry, Brn/Yel, and Yel/Vio wires and then a 2 wire terminal with Vio/Wh, and Blk/Gry wires which I assume is for the running lights. These 2 merge into 1 harness attached near where the bumper mounts to the fender. My plan was to make a harness to bridge the 5 wire to the 6 wire harness that comes on the '18+. Ive got the proper connectors to make the connection. Based on the wiring diagrams posted the Brn/Yel wire is for the the parking lights on both but it looks like the Mach 1 park lights are powered from the 2 wire Vio/Wh wire. So my confusion is the Mach 1 wiring diagram says the park lights are the Brn/Yel wire so what does the Vio/Wh wire that is actually on the the Mach 1 harness go to?

In some instances, the Mach 1 is wired like the GT500, so you have to use the 5.2L options in the wiring diagram book.

This is from a 2021 Book.

The 3 pin connector on the right side is # C1042.
Black/Gray is ground.
Brown/Yellow is Park Front Right, power from BCM.
Yellow/Violet is Turn lamp, Right Front, power from BCM.

The 3 pin connector on the left side is # C156.
Black/Gray is Ground.
Green/Orange is Park Front Left, power from BCM.
Blue/Green is Turn lamp Left Front, power from BCM.

The 2 pin connectors are wired the same, right and left.
Right side is # C1126. Left side is # C1127.
Black/Gray is ground.
Violet/White is Front Right Park Light, power from BCM.

Also, take note that the GT500 / Mach 1 use the same park light assy's, and do not come with fog lights as the other models do. I have not confirmed it, but I suspect that's the 5 wire vs 6 wire difference you've found... no fog light wire from the BCM to the front end of the car.

 

[Boyd]

[SNIP]
So my confusion is the Mach 1 wiring diagram says the park lights are the Brn/Yel wire so what does the Vio/Wh wire that is actually on the the Mach 1 harness go to?

To answer this, The M1 uses a 2 lamp front park light / turn signal assy. Both lamps get park light power, only the most inboard is also turn signal.

 

[Silent niGhT '18]

Thank you for the response. So I should be able to pin the Vio/Wh and the Brn/Yel wires together from the Mach 1 harness to get power to both lamps.

 

[Boyd]

Thank you for the response. So I should be able to pin the Vio/Wh and the Brn/Yel wires together from the Mach 1 harness to get power to both lamps.

Yeah. Per the schematic, those 2 wires are spliced further up and come off the same BCM output, so no issue tying them together.

 

[Silent niGhT '18]

After using the info Boyd shared, I was able to create a harness to go from the Mach 1 wiring to the harness on my car. Parking and turning lights work like they should. Only issue now is the indicator light in the instrument cluster hyper flashes. I know people have had this issue when upgrading from incandescent to led so does the same apply for going from led to incandescent? And would the same resistor used to correct that issue fix this issue?

 

[Nightmonkey]

Is there no way to code led vs bulb with ForScan?

 

[Boyd]

Glad I was able to help.

You can control the hyperflash in Forscan.

 

[Byetter81]

I have confirmed with Levittown Ford that we need the following part numbers and they've confirmed the following part numbers for the lower right and left side grills, the air deflectors for the lower side grills, brake ducts, turn signals, and wire assembly for the Mach 1 bumper swap.

Part Number	Part Name	Price	Quantity	Total
MR3Z-17E811-AB	Cover	$118.22	1	$118.22
MR3Z-17E810-AB	Cover	$118.22	1	$118.22
KR3Z-17F804-A	Air Duct	$35.99	1	$35.99
KR3Z-17F803-A	Air Duct	$35.53	1	$35.53
MR3Z-13201-A	Park Lamp	$83.45	1	$83.45
MR3Z-13200-A	Park Lamp	$83.45	1	$83.45
FR3Z-14A411-M	Wire Assembly	$31.35	2	$62.70
MR3Z-8311-A	Deflector Air	$49.05	1	$49.05
MR3Z-8310-A	Deflector Air	$49.05	1	$49.05

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