Icehouse 1,843 Report post Posted December 20, 2020 Where is your keyed power hooked to the car? I would unhook it where it hooks to the 510 harness and see if it shuts off when you do that. If it does something in the original harness is keeping it on. Great looking wiring!!! Quote Share this post Link to post
grannyknot 151 Report post Posted December 20, 2020 5 hours ago, Icehouse said: Where is your keyed power hooked to the car? I would unhook it where it hooks to the 510 harness and see if it shuts off when you do that. If it does something in the original harness is keeping it on. Great looking wiring!!! Thanks for replying Jeff, the Key Pwr is the 12ga blue/red stripe which is taking power from the black/white wire that use to go to the old coil. I just disconnected it and the ECCS and Fuel pump continue to run so I guess I should check the #46 & #109 ECU Bup next? I just edited the 1st post, all 3 circuits come on with the ignition key, turn the key off and only the RUN circuit turns off, ECCS and Fuel pump remain on until the battery is disconnected. Quote Share this post Link to post
Icehouse 1,843 Report post Posted December 21, 2020 3 hours ago, grannyknot said: Thanks for replying Jeff, the Key Pwr is the 12ga blue/red stripe which is taking power from the black/white wire that use to go to the old coil. I just disconnected it and the ECCS and Fuel pump continue to run so I guess I should check the #46 & #109 ECU Bup next? I just edited the 1st post, all 3 circuits come on with the ignition key, turn the key off and only the RUN circuit turns off, ECCS and Fuel pump remain on until the battery is disconnected. Hmm that is an odd one. Something is back feeding but everything looks correct. My only guess is there is 1 black with white stripe wire that comes out of the ecu that does not need to be hooked up to the others. I think it's for powering a component we don't use. That wire could be back feeding the system and not allowing the ecu to shut down. keep us posted Quote Share this post Link to post
grannyknot 151 Report post Posted December 21, 2020 You were right, #47 black/white. All the lights and the fuel pump turn off with the key, Thanks. I was wondering if was possible to hook up the OBD 1 wires so I could read the codes? Quote Share this post Link to post
]2eDeYe 9,471 Report post Posted December 22, 2020 Super easy to read the codes from the ecu Quote Share this post Link to post
