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 .   7

E X H A U S T   B R A K E   W I R I N G   S C H E M A T I C

1998-2002 Ford Trucks and Econoline Vans 

Equipped With Powerstroke

Ford® Brake Pressure switch 

Blk./Yel. 

Blue 

Red 

Dash 

switch 

OFF 

Red 

Red 

Red 

Red 

To IVS 

Ground 

Red 

Black 

15 Amp 

Fuse 

12V+ 

Ignition 

Switched 

Green 

Black 

Firewall 

Blk./Yel. 

To Ford® PCM 

Blue 

Cruise 

Relay  

Green 

NOTE:  

SHADED AREA 

APPLIES TO 

CRUISE 

CONTROL 

VEHICLES 

86  87 

85 

30  87a 

Red 

Ground 

Relay 

Air Intake 

Filter 

20 Amp 

Fuse 

Connect to 

positive battery 

terminal 

87 

30 

87a 

85 

86 

Black 

Yellow 

Red 

Green 

To Brake 

Green 

T H R O T T L E   R E L A Y   I N S T A L L A T I O N

At the throttle pedal, locate the I.V.S. (Idle Validation Switch).

NOTE: The IVS connection is critical and must be correct. We recommend using a 12 volt test light to verify the cor-
rect wire BEFORE installing the “T” tap.

Most common for vehicles built after 10/2000 is a red wire with a green stripe 2nd from the top of the connector, however because 
of possible production changes, using a test light is the only way to be sure. With the ignition on, probe this wire with the test light 
first as it should be 12 volt positive with the accelerator pedal to the floor. Release the pedal and the light should go off. If this is 
correct connect this wire as explained below, if not, probe the remaining wires until you locate the one which has 12 volts positive 
with the accelerator pedal depressed and no current with the pedal released.
With the correct wire selected, use the blue electrical “T” tap supplied and tap into this wire. Plug the insulated male end of the 12” 
yellow wire into the “T” tap. Connect the opposite end of the yellow wire to terminal 86 of the supplied relay. Connect the 12” black 
wire to terminal 85 of the relay and find a good vehicle ground for the eye terminal on the opposite end.
Connect the two red harness wires to terminals 30 and 87A and then secure the relay to existing wiring (in this location) with the 
tystraps provided.