I have a 1964 Scout 80 with a 152, all original that has been sitting for a few years. Long story short, I finally have time to start on it and there is a big list of things to do. So far I have installed low pressure electric fuel pump, cleaned points, new condenser and put a bandaid on the 1904 Holley. It ran but was leaking fuel. Next day. Traced and troubleshot light wiring and all wiring is done for lights and everything works as it should but the headlight switch is glitchy. Next day. Carb was shot so I purchased and installed a new one and it started on the second crank. Idled and ran perfectly. Victory. Next day. Removed old light switch and installed a new one. Reinstalled light switch and starter key switch in dash. Late night and I did not start engine. Next day. I tried to start the Scout but no luck. Here is where I am on this. Will turn over but not run. I am sure compression is good ( was running) Electric fuel pump is getting fuel to carb Carb is squirting fuel into intake Spark is at plugs Removed and cleaned plugs Verified coil voltage Verified big resistor voltage Pulling remaining hair from my head Looking at the manual and wiring diagram I cannot see a relation to this problem just by installing a new light switch. Any help is greatly appreciated.