> I have a electric Water Temp sending unit for a (?)TR4. Since my car is a
> 60 TR3A (and I am not concerned with originality) I'd like to changeover
> from the 3A's capillary water gauge to the electric type (Which I
> think the
> TR4 had). The TR4's sending unit replaces theTR3A's sending unit in the
> thermostat housing quite nicely. Is this a good conversion and whatelse
> will I need?
I think it's a very worthwhile conversion. You'll need a "voltage
stabilizer" from a TR4-8 and some suitable wiring. I've forgotten the
markings on a factory voltage stabilizer, but the case should be grounded
securely. One terminal goes to the green circuit (fused and controlled by
the ignition switch). The other terminal provides power to the gauge. The
second gauge terminal gets wired to the sender.
Randall
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