Re: Pusbutton schematics.

Posted by HH56 On 2011/11/1 18:22:13
Since this discussion came up, decided to make a manual select autopark. Brian & Randy mentioned a toggle switch and I agree that was the simplest way to go.

I wanted my setup to be almost non detectable and happened to have a burned out relay to play with. Gutted that relay can and installed everything inside. If anyone wanted to do the bypass without having the bad or extra relay or not doing anything to car 2 minutes with a screwdriver wouldn't reverse, it can be done by using an ordinary toggle switch externally. Connect as shown on the schematic and hide the switch somewhere.

Moving toggle one direction, all works as designed. Moving the other direction, 12v is disconnected from relay contact which would normally place trans in park when ign is turned off. The relay still operates with ignition but without the 12v on the one terminal, can do nothing when turned off.

An option if the switch and a new relay is installed in the relay can is use a different switch (3 pole DT instead of DPDT) and that third set of contacts to keep the relay from operating--or mount an external 3P switch & terminal strip on a bracket near the relay and relocate the power wires.

The current second set of switch contacts connects the PB directly to sector for complete manual control. Not really necessary unless the relay fails or is turned off. I threw it in as a failsafe since this dead relay had burned out the coil and it would have been nice to have that feature at the time.

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