Fuel tank,sending unit for Gran Coupe

[tman]

Don't sweat the wire.  Just use the one used on the other sending unit.  That will work if the former owner hacked it up.  In fact hook it up to the old sender, might just work.  Did you go back to the original type guage?  or keep the SW's.  If you kept the SW's, the original sender may not work for that guage.  Try it and see how the guage works.

[drewcrane]

Don't sweat the wire.  Just use the one used on the other sending unit.  That will work if the former owner hacked it up.  In fact hook it up to the old sender, might just work.  Did you go back to the original type guage?  or keep the SW's.  If you kept the SW's, the original sender may not work for that guage.  Try it and see how the guage works.

Yes I am going to do a mock set up to first find the wire and the I will hook it up and see if it works ,

 way back when and the car has been down so long ,I ended up finding a rally gauge set complete and I installed it 10 years ago and the fuel gauge didnt work and now I know why, it was never hooked up .


so I will trouble shoot today the car has been on a rotisserie for 2 years replacing 2/3ds of the sheet metal so I am starting from scratch

[7071 challenger]

Would you mind posting a photo of the driver side of the tank?  Something is peculiar here.  Looking where your sending unit is now, looks like some fabrication was done there.  I still have doubt that is stock.  C'mon GC owners, speak up and tell us where your sending unit is.

Looks weird to me too. Usually, the fuel pick up is part of the sending unit. from  your pick, I don' t see any fuel pick-up with the sending unit, but I see a pipe on the side of the tank...  I would also say that it' s been modified. I used to own a 70 Challenger SE that originally came with a 383 -2 bbl and yhe tank wasn' t like that one. But, dual exhast was added later, so, there is always a possibility that the tank has been replace before I bought it, but I have serious doubts about the originality of this tank.

Robert

[drewcrane]

Looks weird to me too. Usually, the fuel pick up is part of the sending unit. from  your pick, I don' t see any fuel pick-up with the sending unit, but I see a pipe on the side of the tank...  I would also say that it' s been modified. I used to own a 70 Challenger SE that originally came with a 383 -2 bbl and yhe tank wasn' t like that one. But, dual exhast was added later, so, there is always a possibility that the tank has been replace before I bought it, but I have serious doubts about the originality of this tank.

Robert

Hey thanks for the response and yes the tank has been modified ,and I assume it was due to either they wanted different gauges(SW) or the factory sending unit failed and they installed this ,that failed too

No worries I have all new stuff and wont have top worry about that,thanks again

[wiging19]

I'm willing to bet that the original sending unit didn't work because they lost the grounding wire.  So they stuck the other one in to track how much fuel was in the tank.  My ground came unhooked on my car I thought I was going to have to replace it until I realized the problem when I was getting ready to tear the tank out because of rust/hole issue with tank.  It had not worked correctly for the previous owner for years.  I put an epoxy on the hole and reconnected the ground.  The gauges worked great after I did those things.  Then when I finally tore into the car for body work I replaced the tank and fuel sensor just to be sure everything was new.