How to install a push button Starter Switch

[ibsorgn]

Been reading through the posts concerning installing a push button starter switch but I was unable to find one that described the details of the install. Anyone out there install this type of a switch that can recall the process? I have a 72 Plymouth Satellite. Would also like to find a diagram of the ignition "switch". Appreciate any help.


To keep it simple, ignition switch would be set to "Run" when using the push button switch.

 

[Shorthorse]

http://www.mymopar.com/downloads/1972/72SatelliteA.JPG
http://www.mymopar.com/downloads/1972/72SatelliteB.JPG

The connection would consist of
1. A wire to the "I" terminal of the starter relay to one side of the button. There is a yellow wire on the relay now that comes from the ignition switch via the bulkhead terminal.
2. A "switched" 12V supply to the other side of the button. Here's where it gets tricky. Finding the "switched" source. Your electrical system is divided into two types of power. All items that don't need the key to operate, "un-switched". Of those items (lights for instance), some are operated directly off the battery through a fusable link and some also are fed through the fuse block.
The fuse block also contains circuits that are energized only when the key is turned on, "switched" (radio, wipers, ignition for instance). Choosing the right "switched" power connection is the key. Things like, what else is on that connection, whether it's fused and the fuse rating are important. You may also tap off the "switched" power source to the fuse block itself but I'd still want it fused (I like fuses). Unfortunately, I don't know what the amp draw of a starter relay is. Maybe someone will know.

 

[mopar 3 B]

You will need a round male , female and regular round end wire connectors. Disconnect S2-12Y from the steering column connector on the column, install female round connector to new yellow 12 ga wire connect one side of the push button switch. Run a 12 Gauge red wire from the other side of the push button switch to the ammeter R6A-12BK side ( using less then 60 amp alt.) and done.There are draw back to doing this. 1. The starter can be engaged at any time 2. If you are using the factory ECU there will not be 12V to the ignition coil when starting.The upside the original wiring will not have been compromised and can be easily changed back to function as intended.

 

[ibsorgn]

Appreciate the info. Tapped the harness at the steering column and all is well. The old switch is just getting loose and hoping this will save a little ware also, I kind of like the push button start.