Re: 1940 110 Engine cranking when key is in off position
Posted by HH56 On 2023/6/10 23:59:35
It appears the car is operating as Packard designed it.
Looking at the AEA wiring diagram, if you follow the orangish line the battery connects to the BAT terminal on solenoid, from that terminal thru another wire to the ammeter, thru the ammeter and out to the supply terminal of the headlight switch. The supply terminal is a tie point so from there another wire connects to the BAT terminal on the ignition switch. From that same BAT terminal on ign sw a wire connects to the starter button making it hot all the time. When the starter button is pushed, by following the yellow line you will see it goes directly to the starter solenoid so cranking can occur at any time. Starting will only happen though when the key is turned on and the coil gets power thru the wire in the armored cable.
Packard changed this in all 42 models so the key needs to be on. Other than the switches being hard to access I see no reason you could not do the same by moving that connecting wire between the ign sw and stater button. Disconnect it from the ign sw BAT terminal and move it to the GA terminal so it is switched by the key. That way you would not have the continuous cranking ability.
Attach file:
1940wiring-6cyl.jpg (208.41 KB)
Looking at the AEA wiring diagram, if you follow the orangish line the battery connects to the BAT terminal on solenoid, from that terminal thru another wire to the ammeter, thru the ammeter and out to the supply terminal of the headlight switch. The supply terminal is a tie point so from there another wire connects to the BAT terminal on the ignition switch. From that same BAT terminal on ign sw a wire connects to the starter button making it hot all the time. When the starter button is pushed, by following the yellow line you will see it goes directly to the starter solenoid so cranking can occur at any time. Starting will only happen though when the key is turned on and the coil gets power thru the wire in the armored cable.
Packard changed this in all 42 models so the key needs to be on. Other than the switches being hard to access I see no reason you could not do the same by moving that connecting wire between the ign sw and stater button. Disconnect it from the ign sw BAT terminal and move it to the GA terminal so it is switched by the key. That way you would not have the continuous cranking ability.
Attach file:
1940wiring-6cyl.jpg (208.41 KB)
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