Allows a second port for the communication cable connection to the ThunderMax
It is installed to the bikes wiring harness at the 36-pin ECM connector (connection requires harness plug disassembly; two terminated wires are inserted into two unused ports in the 36-pin connector, and a ground wire added)
Handy for motorcycle models with tight clearances around the ECM such as Dyna, Softail Rocker and 02-05 V-Rod models
Made in the USA
Requires ThunderMax ECM with serial number 114000 or higher (produced beginning August 2008). Will not work on previous model ThunderMax ECM or PART #1020-0836 TBW unit.