Thanks for the replies.
Frank, does it show the whole model number anywhere on your literature?
I have an "old" Sun Automotive tester on a cabinet from the 1950’s, back
when 6 volt auto’s were the rage. It operates on 12 volts though, so that’s
a plus. I bought it years ago from a co-worker for $75. Some of the meters
worked "fair", but I don’t remember having much luck testing coils on it.
I should buy a big can of electrical cleaner and go to town on the meters
and see what happens. It even has an "exhaust gas" analyzer …… but
not sure that’s needed for outboards. 🙂