The dash lamp on my 1925 Dalgety Tourer was not connected.
It only has one wire. I tested it across the battery terminals - the wire on one terminal and the case of the lamp on the other and it works!
So I'm guessing I connect the wire to the amp meter and the case of the lamp needs to be grounded somehow. Can anyone enlighten (unintentional pun!) me?
If your car has a metal instrument panel that is bolted to the body, just attach the light to the panel with 2 bolts and that will give you the earth return connection.
If you have a wood instrument panel, you need a washer soldered to a wire slipped on to one of the mounting bolts behind the nut, that gets connected to the body or the chassis to give you the earth (-)return.
If there is already a wire behind the instrument panel that goes to earth, you can connect to that. wire.
I really like the Dalgety body. Those hidden hinges and removable doors are a neat thing
The instrument panel is timber. I'll have to have a look to see if there's a spare earth (ground) hanging around in there, otherwise I'll install one.
It's a bit tricky working under the dash. I'm not exactly thin.
can you somehow attach a small wire to the socket and then run that down somewhere on the metal part of the car?
Grounds are always a problem on wood framed cars, I use a dedicated #12 wire to the frame. All my turn signals, brake lamps or any other accessories are grounded through this wire, I have never had any problems. KGB