The analogue needles are definately electronic as I've had the dash out a few times. The car is a 1994 Toyota Supra. I was imagining wiring this unit in parallel with the pos and neg of the drive to the needle, if you see what I mean. I realise it might screw the calibration a little as there is less voltage driving the speedo but would this still not be possible?
it depends on how the needle is driven... if pulses fron the transmission are use to clock a stepper motor like setup that drives conventional speedo mechanism (or drives the needle directly) there will be no analogue voltage available.
moving coil meters aren't suited to much over 90 degreees needle movement. if you're seeing significantly more than that don't expect to find a convenient voltage source behind the meter.
Bye. Jasen
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