Well just installed new 383 mag and fuel pump and choke is not getting 12 volts when the switch is on. The purple/ yellow wire connected the r terminal on the starter soleniod supplies the power ,but with the switch on no voltage. I removed the wire and connected it to 12volts and fuel pump and choke worked fine. Why don't I have voltage to R ? The old engine starter solenoid didn't have a R .. Should something else be connected from my switch?