The Kustom Truck TCM Jumper works with Allison (GEN4) transmission electronics. The jumper harness plugs into the base bench harness at the bulkhead connector breakout with a Deutsch, 21 pin male connector. The other end of the harness plugs directly into the Allison TCM.
In addition to this TCM Jumper you will need to select the Base Harness and appropriate Battery Jumper to have a complete system.
NOTE: This particular TCM Jumper works with Allison transmissions utilizing GEN4 transmission electronics.
