this was fun!
i plugged in a new sending unit, fresh from moss, and it too pinned the
guage to the right. (H)
i attached another guage that i had around, although i don't know if it is
accurate or really works, and it pinned right as well.
i then removed the new sending unit, put the old one back in, and now the
guage appears to read correctly!!!! until the outside temperature gets hot
again i won't know for sure, but this seems a good sign.
meanwhile, i have returned the new sending unit and asked for a replacement.
----- Original Message -----
From: "Paul Hunt" <email@example.com>
To: "oliver" <firstname.lastname@example.org>; <email@example.com>
Sent: Monday, May 08, 2006 3:34 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