mrjim........first thing to do is "polish" the INVISIBLE corrosion from between yer points. Clamp a clean $1-bill between the points and PULL. Iff'n yer really cheap, tear a strip from HEAVY brown paper grocery sack and use that.
BTW; yes, you should have 6-volts across the points when OPEN and ignition switch is ON. ........Dell, yer self-appointed sparkie-meister