Pacbrake Inline Mount, Installation Manual

INLINE MOUNT Exhaust Brakes

I N S T A L L A T I O N   M A N U A L  

-   L 2 0 3 1

P G .   1 0

Pre 1998 Ford Trucks and 

Econoline Vans with 

Powerstroke

1

For vehicles without cruise control, omit steps 1 -2. Remove 
the relay and mount the receptacle of the C11971 harness to 
the firewall, including the green ground wire, with the screw 
supplied. Replace the relay. Connect both harnesses together 
using the remaining red wire.

2

“Ford” installs a Brake Pressure Applied Switch on the TOP 
of their master cylinder. Open the convoluted conduit leading 
to this switch and pull out the black with yellow stripe wire. 
Cut this wire and crimp on the two red terminals supplied. 
Finally, connect these to the mating terminals of the two 
remaining blue wires coming from the relay. Replace the 
engine top cover and neatly secure all wiring with the plastic 
ties.

3

Drill a 1/2” hole through the firewall, above the throttle 
switch and below the clutch master cylinder or blanking 
plate (auto trans.). Feed the switch terminal end of the har-
ness through this hole into the cab compartment.

4

The Pacbrake throttle switch assembly mounts on the 
outside of the existing Ford switch located above the ac-
celerator pedal, as shown in the schematic. Using a #20 Torx 
driver, remove the screw which attaches the existing switch 
and install the Pacbrake switch assembly. Align the two 
small bracket dimples with the depressions in the mount-
ing bracket. Adjust the switch by bending the switch arm 
to obtain a “click” each time the throttle returns to idle. The 
Ford switch will also click at this time. 

NOTE: Should the “locating” dimples not be realigned, 
poor throttle response will result.