One reason why SOME use special plug wires IS THEY RUN A WIDER PLUG GAP AND AN AFTER MARKET HIGH VOLTAGE CAPABLE COIL which causes higher voltage AND/OR some after market high energy high voltage coils require some degree of ballast/reactance in the plug wires so they use non stock recommended plug wires........
If alllllllll is the same, same plug, same plug gap, same old factory original coil, same fuel, same compression etc etc etc., an elec switch used to conduct then break coil current produces about the same result (at least until points would wear and burn) as the old stock points mechanical switch............
IE YES if you ONLY change to an elec switch versus old points and all else remains the same, NO you don't have to change plug wires but can of course
YES if you use an after market high energy high voltage coil and set the plug gap much wider I WOULD UPGRADE TO THE PLUG WIRES RECOMMENDED.
All an elec switch does is replace mechanical point switching so if no other changes NO you dont need new plug wires and + or - ground doesnt matter either
BE SURE to get a switch matched to your polarity + or -
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Today's Featured Article - The Revival of a John Deere Combine - by The Red, John Fritz. For several years I had been driving by a farm house on the west side of Indianapolis that had a John Deere combine parked in high weeds in a lot behind the house. The gentleman no longer farmed because the entire area was developed with housing and light industry. I had stopped several times and knocked on the door but no one would answer. My curiosity was up and I wanted to contact the owner. I wanted to see what he planned to do with the combine.
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