Concerning testing the switchbox in action, would the following work?

Assuming the Red has 12 volts in I can measure that with a meter or test
light to ensure it works, and it does.
Now for the green which goes to the coil +. What kind of signal is sent out
there? I should be able to verify that something does get sent out
shouldn't I?
If it's not strong enough for the test light to work, then at least the
multi-tester I have should be able to read the volts going out to verify how
many, or just that there is some pulsing going out. True????




"Chris" wrote in message
...
In my case there's four wires on mine.
Red with power in.
Blue with a connection to the distributor
Brown which goes back to the tach I believe
Green which goes to the + on the coil.

I can verify the Red as 12 volts in.
The brown I don't care about
The blue though I'm not sure how I could test the output or whatever with
how it works.
The green to the coil I'd love to test with a test light, but I'm not sure
what really comes out of there.


"tony thomas" wrote in message
news:y2Mne.9908$xm3.2581@attbi_s21...
Technically there is no way that I know of. However, there is a way to
verify all the signals coming into it are there and if the spark is
there. If all inputs are right and no output then you have verified the
switchbox is bad.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

-
"Chris" wrote in message
. ..
I've heard from some that there are tools at the merc dealers to test
switch boxes, however, when I went to an old merc dealer who tests old
motors he said that there was no way to test a switch box.

Specifically, 70's era switch boxes.

Is this true?