Phil..... ...you write..... .."Aprears I have very weak spark at the coil"..... .very good observation. You write..... .."Can the ignition resistor be bad, or bad, old wiring??"..... ..yes and no Since you don't understand resistors, it must be bad, eh?..... .the "infamous ballast resistor" is like a litebulb, it either works (gitts HOT) or it is burned out. wadda revelation. You gotts weak sparkies don'cha? Iff'n resistor was burned out, guess what??? NO SPARKIES.....It ain't burned out! Yer test continuity lite is semi-helpful. Why only semi-helpful?, 'cuz it won't tell you iff'n you have enuff volts (about 3-volts needed) at the coil top terminal. It will tell you yer circuit is continuous, just not where yer loosin' yer volts. Me? I'd start wigglin' wires and wire connections and watchin' the testlite. (iff'n it blinks or changes, guess what?? BAD connection) Maybe even take a pair of pliers and "squash" the wire connectors..... ..Dell, yer self-appointed sparkie-meister
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