I'm wondering if anyone has installed a raptor performance shift light in there car? The catch is that I have a MSD 6BTM box and msd 85551 distributor. I hooked up the tach wire from the shift light to the tach output of the msd box which the tach output is also hooked up to the computer.(Bigstuff GenIII).(wired in parallel) When i set it all up it goes through all its checks and all seems well and all leds light up, but when it hits the desired shift rpm it never lights. Anyone have any similar issues? Also, i have the dip switches set for 8 cyl. obviously...........Thanks.............