The red pin retainer pops out, then you bend the pins to make a tighter connection, put the retainer back in, done.
Theres a few things I found out after I was done with the install, like the TFI adapter issue and needing a laptop to assign the Ford pwm iac to output 4. The car was having issues starting (tfi adapter connection) and having issues staying running and idling good (assigning the iac to output 4 on the laptop) Once that was fixed the car ran great and starts/idles great. Nothing is plug and play and running mint in 15minutes.
For me it was a no brainer. Its a good deal for $1149. I sold my anderson pms4 for $425 to cover some of the costs.