S550 Mustang 2015+ clock spring pass through kit

  • $45.00
    Unit price per 

For those of you using our clock spring kit to operate the 6rStager trans brake/bump box, please add our interface module to make wiring much simpler.  


Tired of not having easy access to your trans brake switch?  Tired of that easy access making driving the car miserable because you are fighting the wires wrapping around the steering column?

This kit allows the addition of two extra buttons to be mounted to the factory steering wheel utilizing the BL Fabrications button switch mounts.  This allows the control/activation of aftermarket control devices, including but not limitied to

  • Transbrake
  • Bump box
  • Boost scramble
  • etc

This is accomplished by adding 2 pins to 2 connectors, one on the column side of the clockspring, and one on the steering wheel side.  

The base kit includes 

  • 4 labeled OEM grade wires with pre attached pins
  • 4 pieces of OEM grade heat shrink
  • 4 bare butt connectors

Optional accessories

  • BL Fabrications button mounts (either left, right, or both)
  • Button switches with pre attached wires (not stretchy coils)

Fully illustrated instructions are available here (Clock spring install), but install should take someone with a moderate level of mechanical and electrical skill roughly 1-2 hours to install (full install including switch mounts, switches and wiring)


Installation instructions can be found here:


Clock spring install



This kit will work on all 2015+ S550 cars, but on vehicles with heated steering wheel, it currently requires disconnecting this feature.