66 late model 350 HEI ign HELP!!

[CaptHutch66]

Hey guys, been burning up the road in the 66 w/no problems.....until today in rush hour traffic on a 4 lane! Noticed an unusual smell (smelled like flourescent light ballast shorted out) when I parked...looked under the hood and didn't notice anything. Got in an hour later started fine took off, went 4 blocks and stopped at a red light. While sitting at the light it just cut off.....no spittn or sputterin just quit! Turns over fine, lights work fine, no sign of burnt wires (not that kind of smell) etc...just won't fire up. Had to get a tow and dropped off at the motherinlaws. I'll have to go back with my tools and wanted to see what kinda thoughts everyone had as to where to start and what to take w/me. Thanks again, Hutch