Retrofit harness for the Generac MK3/MKIII Exerciser Timer. Does not include the exerciser itself, just the harness.
The actual timer, part number 0A8637, can be found here:
Generac 0A8637 MK3/MKIII Programmable Exerciser For GTS Transfer Switch
Generac replacement parts will also usually fit the following Generac branded generators: Honeywell, Guardian, Siemens, Carrier, Watchdog, Centurion, & Bryant.
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