TR2/3/3A Basic Distributer cap Question

My engine has been running well. When I started it up yesterday it did not run well at all. The only thing different between yesterday and the day before is that my son pulled and cleaned the spark plugs. I suspect that he got a wire messed up thereby changing the fire order. I am looking at the Lucas cap and see two things: It is a split level cap and there is no numbers embossed on the cap. My question for you is this: Are the two top firing points #'s 1 & 3 or are they 4 and 2? I have looked through most of my reference material and have not found the answer. I sure would appreciate some help on this very basic question. Thanks Tinkerman

Bzzt! Both are wrong. The top level should be cylinders 1 & 2.


PS, you might explain to your son that it is safer to do one cylinder at a time. That way the wires can't get mixed up.

And if the wires are trimmed to near minimal lengths (like Randall's picture) then they will only go on one way (the right way).