Hey Newbie here Again

I bought this f90bt off ebay and the Video Harness has a relay grafted into it.

Not sure what it was doing and I havent had time to look into it but I also noticed the Blue Ant/Amp trigger wire is out of the connector. Anybody know what pin location it belongs into?

I plan on doing the Pin swap hack and Ive read here that it does not work with V3 FW

Anybody confrim that with this model?

 

Thanks