User's Manual

D. Locate the Orn/Blk and Blk/Wht wires in the dash group. These two wires are for the Gear

INDICATOR

Switch, NOT the Neutral Safety Switch. If you have a GM column then you can use the

combination switch Delco P/N D2286A and wire it as described in paragraph 2 or 3 below. The

ORN/BLK wire needs to be grounded in "Park and Neutral" and ungrounded in "Drive". This can also

be done with a toggle switch or a switch on the parking brake.

NOTE: The Orn/Blk and Blk/Wht wires are only needed if using a 4L60E transmission. If you are

using a manual transmission then you will tape and stow these wires.

CAUTION: DO NOT CONNECT THESE WIRES USING DIRECTIONS FROM DIFFERENT

PARAGRAPHS. YOU MAY DAMAGE THE COMPUTER.

D.1. The recommended switch is a combination reverse light, gear indicator AND neutral safety switch.

You may use it for all these purposes if you wire it EXACTLY as shown in Figure 6.4

Illustration B

D.2. If you are going to use the recommended switch as a gear indicator for the computers benefit

ONLY, then you will wire it as shown in Figure 6.4 Illustration A.

D.3. You may want to install your own switch. This switch must connect the Orn/Blk wire to ground

only when the car is in PARK OR NEUTRAL. You may or may not want to use the Blk/Wht

wire. The other end of the Blk/Wht wire is already grounded throughout the harness.

E. The purple and pink wires labeled BRAKE SWITCH are the wires that connects to the brake

switch to let the computer know when the brake is applied. If you ARE NOT using a 4L60E then

you will tape off and store these wires. If you ARE using the 4L60E transmission then you will

have to install an electrical switch described in Paragraph 4.1.2. The pink wire provides power

for this switch and the purple wire is the signal going to the computer.

F. If you are using the recommended brake switch then you will wire it according to Figure 6.2.

The pink wire to the back of the switch in the illustration is the wire that has power on it whether

or not the brake is being applied.

FIGURE 6.2 Brake Switch Connections