Need a picture or location of where oil line from engine to gauge goes through the fire wall. I don't see any holes where mine should have been. Thanks for any help. Bill
Bill, Here is a photo of a '37 firewall (not mine), showing the 4 hole grommet and mounting bracket. The temperature gauge line, oil pressure line, throttle cable and choke cable go through the grommet. The bracket and hole in the firewall have an enlarged circular cutout that allows the temp bulb to go through.
I should add that the large circular grommet in the picture with the single wire is where the ammeter to coil wire goes. In an original truck the wire would have been in a metal conduit, so called "armored" as an anti-theft device. I believe GM called that Electro-Lok. There was a metal cap on the coil that covered the connection to the coil. Kent
