Re: 48 Packard Start Switch
Posted by HH56 On 2016/6/13 10:02:57
The wire from GA is power when key is on. You could add a wire from GA to the new switch and run another new wire from the switch to the solenoid terminal. If you have the smaller engine with a solenoid having a single small start terminal it is fairly straight forward. If you want to keep the existing carb switch active just add the new wire to the solenoid terminal. If you want to completely stop the carb switch from operating then remove the existing wire from solenoid and add the new in its place. Tape the old wire well and tuck it aside in case you or another owner wants to return to original.
If you have the 356 engine with the large Autolite solenoid and two screw terminals, it is basically the same except you will have to find which screw terminal is from the carb switch and which is providing the ground. If you can't distinguish the old wire colors it is a bit involved. Because of the way ground is provided thru the generator you can't trust a meter to ohm the wire unless it is disconnected at both ends. You will need to disconnect one wire at the solenoid and place a volt meter on it. Try to start the car. If the wire is providing the ground there will be no or a very low voltage on the meter whereas the wire from carb switch will read 6v.
Alternately you could keep it simple and add two new wires to the push button. Run both of them out to the carb switch in a fashion similar to the photo. Use some wire loom to protect the new wires and, if you want to keep both switches operational connect the pushbutton in parallel at the carb switch. If you want to eliminate the carb switch, remove the wires from the switch and splice to the new wires.
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If you have the 356 engine with the large Autolite solenoid and two screw terminals, it is basically the same except you will have to find which screw terminal is from the carb switch and which is providing the ground. If you can't distinguish the old wire colors it is a bit involved. Because of the way ground is provided thru the generator you can't trust a meter to ohm the wire unless it is disconnected at both ends. You will need to disconnect one wire at the solenoid and place a volt meter on it. Try to start the car. If the wire is providing the ground there will be no or a very low voltage on the meter whereas the wire from carb switch will read 6v.
Alternately you could keep it simple and add two new wires to the push button. Run both of them out to the carb switch in a fashion similar to the photo. Use some wire loom to protect the new wires and, if you want to keep both switches operational connect the pushbutton in parallel at the carb switch. If you want to eliminate the carb switch, remove the wires from the switch and splice to the new wires.
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