s300 and high/low octane maps

[dropped93ex]

I was wondering if anyone could help me figure out how to wire my cruise control switch to activate my high octane map ... The cruise control is no longer in the car but I would like to use that switch of at all possible .. I don't mind if I have to run a wire or 2 from the switch to the ecu.. don't know which inputs to the ecu are positive switching or ground switching ... This is on a 93 civic ex BTW ... I may be in the wrong forum but I figured why not give it a shot ... Any help would be greatly appreciated