i just got my autometer a/f gauge and i tried wiring it up ! per a couple f-body friends ! i've got all the wires hooked up except the purple wire (i was told it goes to the purple and white wire but there are several ) which one ? and do i wire it to the computer or straight to the o2 sensor ? i have a 97 ta m-6

 

somebody has had to put one in their car !!!!!