i need some help find the ground wiring for the tach/cluster for my v8 swap. i have the tach signal wire hooked up from my ecu to the yellow/blue stripe wire from b1-01. i need to find the ground wire for the tach/cluster im alittle lost on this part. the wright up for the swap says to wire the black/blue stripe wire from x-05 to ground but i cant find out if that black/blue wire is from the dash side or the emission side of the harness as the color or the wires change from one side of x-05 to the other. can anyone please help me with this i have a 93 rx7 with a auto harness thanks