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S650 Cupholder Ambient Lighting DIY - Wiring Harness

Drew22

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Jun 2, 2025
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Location
DFW, TX
Vehicle(s)
2018 Ford Mustang Ecoboost Base
Hello, I am new to this forum but figured I would share a quick / easy way to create a harness for those of you interested in adding the ambient lighting cupholder to your S650. All of the parts for this harness can be found for a few bucks on Mouser. 22 Gauge TXL wire can be bought from Prowireusa or Wirebarn.

PM IF YOU WOULD LIKE TO PURCHASE A HARNESS $60 SHIPPED

List of Parts Needed...

Lincoln Corsair Cup Holder: LJ7Z-7813562-BA
Mustang Cup Holder Ambient Lighting: FR3Z-14A318-K

Wiring Harness Parts...
Male 4 Pin: 7282-6449-40 (x1)
Terminal: 7114-4100-02 (x4)
Female 4 Pin: 7283-6449-40 (x2)
Terminal: 7116-4100-02 (x8)
20ft - 22GA Wire


S650-HARNESS-2.jpg


Its a very easy harness to make(T-Harness), pin 1 to 1, Pin 2 to 2, etc... However here's a diagram to make it a bit easier.

I've also attached a few files that show how to remove the console lid (STOP AT STEP 12)... No need to continue past there as we only need the top lid off the console.
Route the harness from the RH Footwell Lamp(C266) up through the console. You can zip tie it along side the original harness.

Credit: @Nalo85 (Ford Part #'s & General Info)

Haven't completed this myself so unsure of the trimming required but if someone would like to contribute and let everyone know what to trim (IF ANY) that would be amazing!!
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