In a message dated 5/31/99 4:39:38 PM Eastern Daylight Time,
musson@satie.arts.usf.edu writes:
> Found a almost-NIB electric gauge from a TR4 in parts pile. --
> So, I give up.. I have gone through two rebuilt temp gauges (keep doing
> something stupid and breaking the cap tube) on my never close to concours
> driver.
>
> My question is: there is a single pole on the sending unit and two poles on
> the gauge. Don't see any indication which side is positive or negative.
> Could someone give me a quick how-to on hooking it up?
Carl,
Gauges are not polarity sensitive -- just connect them up any way that's
convenient. Just remember, the gauges get their power feed from the voltage
stabilizer, and the sender porvides the ground path. If you are adding an
electric gauge where there was none before, the output voltage of the
stabilizer may change, causing all of the gauges to read wrong. The
difference may not be much, but you will need to be mindful of it. Accuracy
is not very important, only repeatability, which will not change.
Note: the non polarity sensitive factor only applies to the thermal type
gauges used in LBCs, and NOT to some of the aftermarket gauges, which use a
dual coil movement, such as Autometer, VDO, etc.
Dan Masters,
Alcoa, TN
'71 TR6---------3000mile/year driver, fully restored
'71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion - see:
http://members.aol.com/danmas/
'74 MGBGT---3000mile/year driver, original condition - slated for a V8 soon
'68 MGBGT---organ donor for the '74
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