The trigger is the points, grnd, self explanatory and 12 volt switched is for the light,your back indicates an 8 cylinder, if you pull the cup off there may be a slider switch inside to choose the number of cyl.s, 4-6-8.

Last edited by jalopy45 #4899; 02/12/12 07:15 PM. Reason: spullin

'45 Ford PU
66 Valiant wagon, leaning tower of power.
79 Chevy C10 w/250
02 PT Cruiser Convertable