does the HKS turbo timer wiring harness for the WRX work on the Apex-i turbo timer?

 

yes it does. i have the exact same setup. apexi TT and HKS harness. Make sure the harness is for the IMPREZA model. I've plugged the harness into the ignition, but have not had time to get this to work. gotta cut factory alarm, splice into handbrake and ecu and ground. Haven't figured that out yet. Let me know how the install goes.

Hank