Pete Phillips Posted June 5, 2023 Share Posted June 5, 2023 Working on a 1948 Super, older restoration, fuel gauge not working. So I removed the tank and found that the ground wire for the sending unit was attached to the outer half of the sending unit with a small hose clamp, squeezing it against the metal fuel line. I verified that the gauge and sending unit are working when I temporarily ground (touch) the side of the sending unit to one of the body bolts. Obviously, the little grounding wire and eyelet are not going to fit on the body bolt. So, I'm asking: Where do you guys normally ground your gas gauge/sending unit wire? What do you attach it to? First photo shows where the grounding was attached. Second photo to get attention! Pete Phillips, BCA #7338 Leonard, TX Link to comment Share on other sites More sharing options...
Bloo Posted June 5, 2023 Share Posted June 5, 2023 I usually use one of the tank mounting screws, but there's no reason the hose clamp won't work. 1 Link to comment Share on other sites More sharing options...
Ben Bruce aka First Born Posted June 5, 2023 Share Posted June 5, 2023 I believe there was no ground wire originally. I always use one , though. One end connected to a sending unit mounting screw, the other to first convenient body or frame bolt. I think mine is run through the trunk floor and attached to the lock striker plate bolt. Ben 3 Link to comment Share on other sites More sharing options...
EmTee Posted June 5, 2023 Share Posted June 5, 2023 I usually drill a small hole (~ 1/8") in the frame rail adjacent to the tank and attach the ring terminal on the ground wire to the frame with a self-tapping screw. I have used both the sending unit screws and a clamp around the fuel line (like above) on different occasions. 4 1 Link to comment Share on other sites More sharing options...
Wayne R Posted June 6, 2023 Share Posted June 6, 2023 Most european cars they are attached to the sending unit, probably because they are kept clean, and dry. In fact with seventies Alfa Romeo, the both positive, negative, ground , wires ran inside at the back of the trunk under carpet, and they had a connection there.----And that is an Alfa s owner best way to protect his car, as it only took a minute to disconnect that in the trunk.---i accidently did this to mine years ago , and forgot to reconnect and you get about 50 yards then car stops. Link to comment Share on other sites More sharing options...
Wayne R Posted June 6, 2023 Share Posted June 6, 2023 3 hours ago, Wayne R said: Most european cars they are attached to the sending unit, probably because they are kept clean, and dry. In fact with seventies Alfa Romeo, the both positive, negative, ground , wires ran inside at the back of the trunk under carpet, and they had a connection there.----And that is an Alfa s owner best way to protect his car, as it only took a minute to disconnect that in the trunk.---i accidently did this to mine years ago , and forgot to reconnect and you get about 50 yards then car stops.----Sorry i have to put this right all to sending unit correct, but the wires also went to fuel injection pump, that is the connection i was talking about where it can shut off. All early Alfas had a fuel injection pump called Spica fitted to USA only. Link to comment Share on other sites More sharing options...
Sonomatic Posted June 6, 2023 Share Posted June 6, 2023 What a great looking car! Yeah, we need a few more shots of this beauty Link to comment Share on other sites More sharing options...
Pete Phillips Posted June 6, 2023 Author Share Posted June 6, 2023 It's a beauty. 1948 Super. 6 Link to comment Share on other sites More sharing options...
Smartin Posted June 9, 2023 Share Posted June 9, 2023 Self tapper right into a body brace or something convenient that won't poke through the trunk floor. 1 1 Link to comment Share on other sites More sharing options...
Century Eight Posted June 9, 2023 Share Posted June 9, 2023 I usually attach the wire from one of the sending unit screws to a convenient place on the frame. 2 Link to comment Share on other sites More sharing options...
rodneybeauchamp Posted June 18, 2023 Share Posted June 18, 2023 (edited) Pete, I made up a long black wire attached to one of the sender unit screws and followed the sender wiring up into the bodywork and fixed it to a tail lamp bolt on my Skylark so I didn’t have to drill another hole. Covered it in black protective cloth to prevent damage. On my ‘38 did a similar thing but found a suitable screw on the chassis or bodywork. Both worked well for me. Rodney 😀😀😀😀😀😀 Edited June 18, 2023 by rodneybeauchamp Added information (see edit history) Link to comment Share on other sites More sharing options...
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