Shift Box COLOR Installation Instructions

1990 DSM's

(Under Construction)

Wiring instructions:

• IMPORTANT NOTE: If used with a TCU or other method of controlling the transmission, follow the instructions closely. Only one way of controlling the transmission should be powered on at one time to prevent unexpected control of the transmission or damage to the TCU. Use the supplied switch to switch between transmission controls or substitute a suitable relay. Updated!

Using the Shift Box COLOR as a standalone transmission controller:

2 pin Power harness [18awg wires]

1. Red wire is +12 volt switched from the ignition
2. Black wire is ground, connect to a good clean chassis ground

6 pin Main harness [24awg wires]

1. Red wire is +12 volt constant power
2. White wire splices with the Tacho output from the ECU
3. Green wire splices with the TPS input to the ECU
4. Yellow wire goes to the Shift Solenoid A
5. Brown wire goes to the Shift Solenoid B
6. Blue wire goes to the Pressure Control Solenoid

3 pin External Shifter harness [24awg wires]

1. White/Black wire is the common and sensor ground
2. Purple wire is the up-shift button (short to white/black wire to perform up-shift)
3. White/Purple wire is the down-shift button (short to white/black wire to perform down-shift)

Cap any un-used wires!

Using the Shift Box COLOR and using a TCU:

2 pin Power harness [18awg wires]

1. Red wire is +12 volt switched from the ignition (CONNECT TO GREEN WIRE ON TOGGLE SWITCH)
2. Black wire is ground, connect to a good clean chassis ground

Shift Box / TCU toggle switch 18awg wires]

* NOTE: On the fuse block there are 2 wires from the TCU fuse, both must be cut and spliced together through the supplied switch harness to prevent the TCU from being powered when the shift box is being used.

• Red wire to Green switch harness wire
• Yellow switch harness wire to fuse block harness (Power from TCU fuse)
• Brown switch harness wire to fuse block harness (This will power the TCU)

6 pin Main harness [24awg wires]

1. Red wire is +12 volt constant power
2. White wire splices with the Tacho output from the ECU
3. Green wire splices with the TPS input to the ECU
4. Yellow wire goes to the Shift Solenoid A
5. Brown wire goes to the Shift Solenoid B
6. Blue wire goes to the Pressure Control Solenoid

3 pin External Shifter harness [24awg wires]

1. White/Black wire is the common and sensor ground
2. Purple wire is the up-shift button (short to white/black wire to perform up-shift)
3. White/Purple wire is the down-shift button (short to white/black wire to perform down-shift)

3 pin TCU Solenoid harness [24awg wires]

1. White/Yellow wire goes to the TCU Shift Solenoid A output
2. White/Brown wire goes to the TCU Shift Solenoid B output
3. White/Blue wire goes to the TCU Pressure Control Solenoid output

Cap any un-used wires!