What is a good timing light to by?

 

I moved your post to its own thread so as not to hijack someone elses. I have an old Craftsman with an advance dial on the back that I've used for almost 40 years. You don't need a very expensive one. Try harbor freight, sears, or amazon. Sometimes you can find a really good one at pawn shop, craigslist, yard sale, or ebay.