02-09-2018, 06:29 AM
Hi Simon
I guess the data logger stuff is applicable to moderns where there is other data to coordinate with. For a simple older car just knowing which side of the knee on could be useful, and that just requires the voltage output. Not much concerned about the cold engine condition.
I dunno what resistance load they typically operate into but an unmodified digital voltmeter would seem to invite ignition volt troubles.
Someone must have some NOS single wire units going for $50 or so!
I guess the data logger stuff is applicable to moderns where there is other data to coordinate with. For a simple older car just knowing which side of the knee on could be useful, and that just requires the voltage output. Not much concerned about the cold engine condition.
I dunno what resistance load they typically operate into but an unmodified digital voltmeter would seem to invite ignition volt troubles.
Someone must have some NOS single wire units going for $50 or so!