50+ year old electronics.. and why not to trust them

[teazer]

The only coils I had a major problem with were from a GS500 where I had to flip one coil and sand the smallest amount off two adjacent coils.  Most of the aftermarket coils have spade connections but fit without issues.

If yours are genuine N-D, they should be good +/- and minor trimming.

I inherited a pile of old OEM coils and probably half of them had one or two coils with breaks on the low side and most of them benefited from replacing the plug(HT) leads. SuzukiDave was the guy that taught me the replacement lead trick a few decades ago.

[m in sc]

yeah. they're good.. till they aren't.  I heard this about triple cdis for years,  thrn in like a 2 year span there was a rash of failures

[Striker1423]

Well, I should say, I was being rather lazy when I did it. I had the super cheap aftermarket coils from eBay and ran into fitment issues, so I used the plug wire from those coils and new NGK caps. The plug wires were all braided copper. I had a roll of solid core somewhere, but couldn't find it and figured the braided leads would work. Which, they do, but I just want the piece of mind on new coils.

https://www.ebay.com/itm/297441808911

Expensive, yeah, but seemed worth it.