Vmac 3550555 Installation guide

Document 1900552

April, 2005

2

Drive Disable Circuit Installation

All Ford F250-550 Applications

with Automatic Transmission

PART #3550555

This device is designed to prevent operation of the Throttle Commander unless

BOTH the park brake is fully engaged AND the transmission is in the park position.

Do not operate the Throttle Commander system without the Drive Disable Circuit.

Installation

1. For 1995.5 - 2002 model years:

a) Remove the OEM connector from the park brake switch (Figure 1).

b) Connect the black wire from the Throttle Commander to the matching black “Throttle

Commander” wire at the DDC. Tape the connection.

c) Connect the OEM park brake wire to the black “Park Brake” wire with the piggy-back connector

on the DDC.

2. For 2003 -2004 model years:

a) Locate the green with red stripe wire at the park brake switch, (Figure 2).

b) Attach the black wire from the throttle control with the female spade connector to the black

“Park Brake Jumper” wire with a male connector on one end and a piggy-back connector on the

other end. Tape this connection.

c) Cut the piggy-back connector off. Pull back the loom from the park brake wire and splice the

black wire to the green/red park brake wire. Follow the instructions in Appendix A.

3. Install the Drive Disable Circuit (DDC) under the dash using nylon ties. Figure 3 shows the DDC

connections.

4. Connect the assembly onto the park brake switch.

5. Check vehicle model year to select appropriate Park/Neutral wire color and location.

a) Model Year 2002-2004 – Locate the grey connector of a group of 3 above the inner fender liner

on the driver’s side of the vehicle (Figure 4).

b) Model Years 1999-2001 – Locate the forward most connector on the inner fender liner on the

driver’s side of the vehicle (Figure 5).

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c) Model Years 1995.5-1997 – Locate the square connector on the inner fender liner on the

driver’s side of the vehicle (Figure 6).

6. Feed the blue wire from the DDC through the firewall, and route it to the connector.

7. Solder the blue wire to the selected wire in pin 12 of the connector found in step 5. Refer to Appendix A

for soldering instructions.

Single Speed Operation

1. Solder the red “SPEED 1” wire on the DDC to the red “SPEED 1” or “12 Volts” wire on the throttle (on

T500081, “SPEED 1” is yellow). See Appendix A for soldering instructions. If soldering is not practical,

follow step 2.

2. Clip one of the supplied female T-tap connectors to the “SPEED 1” or “12 Volts” wire of the throttle.

Use pliers to close and latch the connection. Strip ¼” off the red “SPEED 1” DDC wire, and crimp on the

supplied spade quick connector. Plug the quick connect into the T-tap connector and tape the connection.

Multiple Speed Operation

1. Follow Single Speed Operation instructions above.

2. Solder the purple “SPEED 2” wire on the DDC to the purple “SPEED 2” throttle wire. See Appendix A

for soldering instructions. If soldering is not practical, follow step 3.

3. Clip one of the supplied female T-tap connectors to the “SPEED 2” or “12 Volts” wire of the throttle.

Use pliers to close and latch the connection. Strip ¼” off the purple “SPEED 2” DDC wire, and crimp on

the supplied spade quick connector. Plug the quick connect into the T-tap connector and tape the

connection.

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Figure 1

–

1995.5

–

2002 Park Brake Connection

OEM Park Brake Switch

Connector

Green with red stripe

Figure 2

-

2003

-

2004 models p

ark brake connection

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FIREWALL BULKHEAD

TRANS. CONNECTOR

T-tap Connector

supplied

if soldering not practical

SOLDER CONNECTION

PREFERED OR

T-TAP CONNECTOR

BLU

TRANSMISSION

PARK/NEUTRAL

WIRE

22-18

TAPE OFF TO

PREVENT SHORTING

IF NOT USED

OEM

PARK BRAKE

WIRE

PARK BRAKE

BLK

THROTTLE

PARK BRAKE

JUMPER

OR DDC

PARK

BRAKE

SPEED 1

12 VOLTS

SPEED 2

BLK

PUR

RED

BLU

DDC

3550555

WIRE

LABEL

XXXX

LEGEND

THROTTLE

COMMANDER

BLACK WIRE

SPEED 2

TO

THROTTLE ACTIVATION

CIRCUIT

SPEED 1

(2002 - PIN #12 - WHT / PNK)

(Test for selection)

(1999-2001 - PIN #12 - BLU/ORG)

Figure 3

–

DDC Connections

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1234

5 6 78

9 10 11 12

Grey Connector

Blue/Orange

wire location

Figure 5

–

1999

-

2001 Mode

l Years

2002

-

2004 Models

–

12 of the grey connector.

White wire with pink

stripe.

Brake Fluid

Power Steering

Reservoir

Figure 4

–

2002

-

2004 Model Years

1234

5 6 78

9 10 11 12

Grey Connector

White/Pink

wire location

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Connector Location

(1995.5 – 1997)

Location of the

Red/Light Blue Wire

(1995.5

–

1997)

Figure6

–

1995.5

-

1997 Model Years

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Testing the system

1. Use the following procedure to test the operation of the safety circuits:

2. For safety, place the vehicle in a safe operating position, and block the vehicle wheels. Ensure that there

are no other people around the vehicle.

3. Sit in the driver’s seat, with the transmission in “Park” and the park brake fully engaged.

4. Start the vehicle engine and wait for the idle to stabilize. Engine operating temperature should be in

normal operating range.

5. Test the operation of the Throttle Commander. Momentarily activate the throttle by turning it on then off

again quickly, the engine should start to idle up.

6. Firmly apply the vehicle’s foot brake and hold it down.

7. Release the park brake and momentarily activate the throttle as before. The engine should not idle up.

8. Apply the park brake and firmly apply the vehicle’s foot brake and hold it down.

9. Place the gear selector in any position other than “Park” or “Neutral”.

10. Momentarily activate the throttle as before. The engine should not idle up.

11. Place the transmission in “Park” and shut-down the vehicle’s engine.

If the vehicle fails either the park brake test (step 6) or the gear selector test (Step 9), check your

wiring to make sure that all the connections are correct and secure. If you require additional

assistance, please contact your local VMAC dealer.

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Appendix A

– General Soldering Instructions

1. Cut the OEM wire, and strip approx. 1/2” from each e

nd and from the

DDC wire.

2.

Slide the heat shrink provided onto one OEM wire and the DDC wire.

Twist the 3 wires together.

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3. Heat all 3 wires at the joint with a soldering gun/pen, then apply the

provided solder. Ensure the solder “flows” into the joint to bond the

wires together.

4. Slide the heatshrink over the joint, and shrink onto the joint using a

heat gun. Make sure the shrink is heated till the meltable liner melts

and makes a good seal.

1333 KIPP ROAD, NANAIMO, B.C. B9X 1R3

TEL: 250-740-3200

FAX: 250-740-3201

TOLL FREE: 877-912-6605

Vmac 3550555 Installation guide

Vmac 3550555 Installation guide

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