In message , micky
writes:
[]
So I got corsage pin (I've lost all my hat pins) and ran it through the
insulation of the first wire, the thinner of the two, and connected it
to a voltmeter and then opened the trunk. Each time I'd see a short
pulse in the digital meter up to iirc 12 volts, but interestingly, it
would follow the sound of the trunk release by a half second.

The keyword there is "digital"; most digital meters are quite slow,
ranging from one reading every two or three seconds, up to maybe four
times a second. An old-fashioned moving coil (i. e. pointer) meter would
serve you better. Or, if you're going to do this sort of thing a lot, an
LED (with series resistor) - or, a small loudspeaker (most definitely
with series resistor!); the latter has the advantage that you don't have
to look at it. (Actually, I'm a great believer in "listening" in this
way to such signals: one can become familiar with the sound of various
signals, both when well and when poorly. Though I've never actually
listened to CAN.)

To check your meter's response time, just connect it to something you
know is 12V and back again to 0V a few times - and watch how quickly (or
not) it gets there. Half a second isn't unusual for a DMM.

Then it got dark and slightly cold.

(-:

But I'm almost done. Maybe I can finish tomorrow.
[]
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Who can refute a sneer? - Archdeacon Paley, in his book Moral Philosophy