So I used to have my security interrupt on the starter circuit from the IGN but I figured someone could easily pop the hood and jumper the solenoid.
Then I thought about moving the interrupt to the fuel pump but doing so would cause me to lose my initial key-on priming ability as I disable the interrupt after key-on.
My next option was to place the interrupt on pins 37 + 57 (VPWR). I inserted the interrupt at the 60-pin plug. That seems logical; kill power to the EEC and the engine can't run.
Well, somehow, I can run it with those two wires interrupted!
WTF?
This is an RJM harness. With the EEC relay pulled it will not start so I don't understand why interrupting 37 +57 doesn't work. I see nothing in the RJM diagram that indicates an additional power source. There has to be something spliced into the harness between the relay block and the 60-pin connector providing power. I thought about KAPWR but that is hot regardless of the EEC relay or 37+57 status.
Then I thought about moving the interrupt to the fuel pump but doing so would cause me to lose my initial key-on priming ability as I disable the interrupt after key-on.
My next option was to place the interrupt on pins 37 + 57 (VPWR). I inserted the interrupt at the 60-pin plug. That seems logical; kill power to the EEC and the engine can't run.
Well, somehow, I can run it with those two wires interrupted!
WTF?
This is an RJM harness. With the EEC relay pulled it will not start so I don't understand why interrupting 37 +57 doesn't work. I see nothing in the RJM diagram that indicates an additional power source. There has to be something spliced into the harness between the relay block and the 60-pin connector providing power. I thought about KAPWR but that is hot regardless of the EEC relay or 37+57 status.