im installing a new b&m pro stick shifterand i dunno which wires outa the stock switch go to the new safety switch... any ideas and will everything work like normal with the aftermarket plug? i nevr done it before and im cornfused thanks

 

According to the schematic, and only IF these are the wire colors present at the plug:
Yellow and purple: starter circuit, closed together when in park or neutral.
Black with white stripe and orange with black stripe: ECM circuit, open when in park or neutral. Closed when in "gear".
Light green and dark blue: backup light circuit, closed together only in reverse.
(standard disclaimer: if you short something out, it ain't my fault)

 

so just hook up the yellow and purple to work?

 

To work the starter, yes.
The other ones wouldn't be there if they weren't needed.
If your car no longer has an ecm, you could leave "Black with white stripe and orange with black stripe" disconnected. It may be tied into the cruise control also. If so, it wouldn't work afterwards.
The last 2 could be left disconnected if not having backup lights doesn't bother you.

 

i have the ecm still, but im thinking that it only reads the ecm if them are connected to tell it what gear your in... so if just the yellow anpurple hooked up i should be able to drive it right?

 

does it matter where i connect the purple or yellow wire on the switch?

 

If it has only 2 terminals, no.