question about installing turbo timer?

[DSM_ROOKIE]

i got a 93 GSX and wanting to put in my turbo timer but got a little problem and couldn't figure out why. i install it like the manual say to install it, i put the black wire for ground, gray wire for the ebrake and i use an evo 8 harness that i got from a friend for the plug and play and the timer wouldn't turn on. i was wondering if the evo 8 harness is the problem? if any body out there can help me out that would be great.