Low speed fan

When is the low speed fan supposed to turn on? I thought it was whenever the heat or defrost was on. The reason i am asking is because i just installed a V-2SQ, now my low speed fan won't switch on when i have the defrost, heat or airconditioning switched on. I did crack an air-conditioning line right at the pressure switch connector during the install. So that was unplugged and left hanging. Do i need to have that connector plugged in to have the low speed fan turn on?

I know this is the 5.0 tech forum and i have a 94, but i thought you guys might also be able to help me. I also posted in the 94-95 forum, thanks.

I plugged the connector back in minus the ac line i cracked and still got nothing from the fan with the AC or defrost on. My high speed fan comes on when the car reaches temp but seems to be intermitent but the low speed will not engage at 208 at all. Everything was working fine before the install.... would me banging around the CCRM have anything to do with it? Is it that sensative to shock? I was grinding on the bracket with the box still attached. I guess the only way to find out is to test the wires.... its gonna be another long night after work The more i think about it the more i have a feeling its the CCRM or the fan itself.