Switch on Venturi

[bpossel]

There are 2 wires for the switch on the venturi, black/red (pink) and brown/white.  Both have the same size eyelets.  My switch has 2 different screws, one philips (slightly larger head) and one std.
Can anyone help me with which wire goes where :oops: ?  I cant tell which connection on the switch is ground and which is power?  :oops:
Thanks for your help!
Bob  

[graphic66]

My car, a 66 230SL, automatic has the red wire on the top terminal and the white on the bottom.