#1 I did not use edit I checked my harness as it is currently torn apart, I left this one factory edit
#2 goes to the coil ground
#3 I wired to trigger a relay, this is hot when the key is in the on and in the start position. you will use this to power the whole system(why I used a relay due to the electrical
#5 I left in the factory configuration
To feed pin C9 on the ecm I just taped into the starter solenoid trigger off the relay
90 YJ Magnum 5.2 v8 , 1'' BL, 1'' booms, 4" Procomp, 35/12.50-15 MTR/kevlar Ford 8.8 4.10 lsd Aussie and TJ shafts up front.