2001 f 350 remote start

Hi, I have a 2001 F 350 that I just installed a crimestopper remote start in and everything works except I can not get the heater fan to run. I tied the accessory wire from the unit to the BLACK/ Green wire on the ignition switch harness (which tests as a good accessory wire) and it does not work.   It does turn on the radio, but just not the heater controls.    Thanks,   Keith

Thanks much, that's what I needed now works great! Keith