16 replies to this topic

[croc7]

I think I may have buggered the instrument voltage stabiliser!

I have had the dash out working on the speedo, I put everything back together but omitted one of the connections, took the dash out again refitted the missing connection, then checked all was working as it should.

All fine, but then I noticed the fuel gauge fall to zero. Switched off, then restarted the car, fuel gauge goes to half way (half tank of fuel), but then the gauge returns to zero.

Duffy, is a ‘65 Elf which would have originally been positive earth with a dynamo. Some time in the past a 1275 A+ engine has been fitted with an alternator and is now negative earth.

The electric water temp gauge has been replaced with a capillary one so the voltage stabiliser only feeds the fuel gauge.

I suspect I may have “blown” the stabiliser, is there any way I can test this?

should I change to a more modern stabiliser?

Check the instructions given in Steam's reply (above).  Very clear and easy test procedure.

[ac427]

There is an interesting article on how to test the Smiths bi-metalic stabilizer :-
https://www.wheels-a...age-stabiliser/

If you've got a solid state one they're easier. My solid state one recently gave really wierd gauge readings - turned out to be a bad connection (loose) where the I terminal was riveted to the PCB. Took it apart and put some decent copper rivets in both the B and I terminals - fine now.

 

Dave also covers British wiring standards in his second article, which then has links back to this forum

https://www.wheels-a...iring-standard/