Copyright © 1998 General Motors Corp. D–1
WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
APPENDIX D — WIRE/CONNECTOR CHART
The connector information in this appendix is provided for the convenience of the servicing technician. The
connector illustration and pin identifications for connection to Allison Transmission components will be accurate.
Allison Transmission components are the ECU, speed sensors, retarder connectors, transmission connectors, and
shift selectors. Other kinds of connectors for optional or customer-furnished components are provided based on
typical past practice for an Allison-designed system. Wire number and color codes shown are for Allison-supplied
harnesses. Harnesses supplied by OEMs and customers may use different wire numbers and colors.
Contact St. Clair Technologies, Inc. or your vehicle manufacturer for information on connectors not found in this
appendix.
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