Aftermarket EFI-Keep OEM Gauges
I'm in the process of installing the Holley Dominator EFI and would like to still keep my OEM gauges on my 1991 LX. I know they all feed through the round brown eight pin connector on the drivers side firewall. I have pulled the engine harness apart and traced all of the wires. Im trying to confirm a few questions I have.
1-White/Red wire goes to oil sender-No question here
2-Red/White wire goes to coolant temp sender-No question here
3-Purple/Yellow wire goes to 02 harness-Had it cut before car worked fine, still don't need it-No question here.
4-White/Purple wire goes to 02 harness-Had it cut before car worked fine, still don't need it-No question here.
5-Red/Blue wire went to TFI module start wire-Will not use-No Question here
6-Red/Green wire went to coil positive, TFI run wire and ECU power relay. Will not be using, no question here.
7-Tan/Yellow wire went to coil negative, TFI module and pin 4 in the 60 pin ecu connector-Does this wire connect to coil negative to feed tach signal ??
8-Gray/Red wire went to Self test port, barometric sensor, coolant temp sensor, air temp sensor, egr sensor, tps sensor, and then to pin 46 of the 60 pin ecu connector. This wire appears to ground wire for these sensors, but also appears on diagrams found at veryuseful.com as the ground wire for the neutral safety switch. Do i just ground this wire so the neutral safety switch will still work correctly and start the car??
408 Dart, Fox Lake Vic Jr's, Proformance Racing TH400 , YSI, Holley Dominator EFI