993 Fabspeed intake and A/C issues
 

I have searched and found no answer (thought I had read something somewhere..).

My brother installed a Fabspeed carbon intake on his 993 and that requires disconnection of an engine compartment blower (I'm told). His A/C blower only works on "Hi" now.

Somewhere there was a box with relays to fix this. Any pointers? (Fabspeed has no solution).

This is on a 1997 C2S Tip.