[TR] fuel gauges

[Art McEwen]

>> > Same here and it worked well on the bench but when I 
>> > installed in in the car it wouldn't read right.  The author 
>> > of the website said MGAs used a different system then TR3 fuel gauges
>>     
>
> Really ?  It's not like Barney to get that wrong ... the original TR3 fuel
> gauge is virtually identical in both form and function to the MGA gauge.
> The resistances might not be exactly the same, but the system is.
>
> TR4-onwards are totally different, of course.

Not sure he is wrong, mines a post 64000 and had a TR4 (I think) gauge 
in it that works fine, I just picked up a couple over the years that 
look more correct (but don't work nearly as well).