key on , CEL glows. as does ,fuel gauge work, and other lamps. due to the wire on pin 7, in cluster, goes hot with 12vdc. battery voltage. power.
then jumper A17 to ground this puts the ECU in diagnosit mode, (not idle speeds) just diag mode.
then the ECU flashes out codes, 12 = happy
if the lamp does not flash, but glows key one, that means the NAG is active
remove the NAG switch 23, if found, or slide it one time, only. now the CEL flashes.
it only takes 2 wires and a ground to do this,
then jumper A17 to ground this puts the ECU in diagnosit mode, (not idle speeds) just diag mode.
then the ECU flashes out codes, 12 = happy
if the lamp does not flash, but glows key one, that means the NAG is active
remove the NAG switch 23, if found, or slide it one time, only. now the CEL flashes.
it only takes 2 wires and a ground to do this,
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