PS. Sender seems to be the same for 18GB engines right through to 18V, so
electrically the gauges would appear to be the same. I have a theory they
are also the same as the fuel gauges, cross-connecting the two at various
points would be an interesting exercise.
----- Original Message -----
From: "Paul Hunt" <firstname.lastname@example.org>
To: "oliver" <email@example.com>; <firstname.lastname@example.org>
Sent: Monday, May 08, 2006 9:34 AM
Subject: Re: temperature guage
> How do the numbers on the face-plates differ? I did find one reference to
> that number as being for an MGB but it didn't say which model or year.
> After the gauge changed to become the single electric in late 67 it
> again for the 72 model year, and again for the 77 model year. This last
> the subsidiary reference number BT 2231/01 in the Parts Catalogue, but the
> other two do not have a BT number, so your number could be either of the
> earlier items, and if the face plate numbering is different is probably
> 'other' one. However, how do you know it is the gauge and not the sender?
> Or the wiring? And the gauge is calibratable over quite a large range, if
> it is reading but not pointing to the right area. If it isn't reading at
> all, or very low, ground the green/blue at the sender on the head and the
> needle should move smartly up to the H. Only ground it long enough to see
> if it does get to the H, and if it does the problem is the sender. If
> ground the green/blue on the back of the gauge - *NOT* the green - and if
> the needle moves up to H then it is the wiring.
> ----- Original Message -----
> > i have a 73 cbb roadster, and the temperature guage is not being
> > purchased an infra red sensor, so i can tell the real temperature, and
> > ain't it!!!
> > i ran across a unit that is Part number BT 2220/02. will that work for