Fuel guage

[Guest DatsuNoob]

Does anyone know the stock ohm resistance for a stock 620 fuel guage? I'm trying to buy an aftermarket one and I need to know which one to get based on comparing the resistance ratings. Thanks

[moparvwfreak]

its not the guage that you need the resistance for. its the sender in the tank. if you can pull that and measure the resistance you'll have your answer. i personally dont knwo it but someone else here may.

[Guest DatsuNoob]

That's what I meant. Who knows what the resistance of the stock sender is at full and empty, so I know which guage to buy. Or could I just switch my stock one with one matched to the guage? I'm an electrical dummy, please help. Thanks.

[moparvwfreak]

i would go with the matched sender. that way its not a guessing game. order it together with the guage adn your golden. autometer is the best i have found so far. why not use the stock guage? are you going full custom dash and guages???

[Guest DatsuNoob]

yeah, doing away with stock guages. thinking aluminum bezel with auto meter ultra lites and a glassed dash. Not sure how confident I am in my electrical skills. I need a guy I can bribe with beer to lend a hand.

[moparvwfreak]

i would be more than happy to come down for gas $$ and some pop. i am actually pretty good with wirez and stuff :D

[datzenmike]

I used a 720 gas tank on my 620 and the gauge read the same, so the senders in the tank are the same.

 

The 720 sender will read +-10 ohms when fully up in the full position. It will read +- 80 ohms in the fully down position when empty. This is from my 720 FSM.

[Guest DatsuNoob]

good to know, thanks Mike!

[hang_510]

... sender will read +-10 ohms when fully up in the full position. It will read +- 80 ohms in the fully down position when empty.

so what your really saying is that a 0-90ohm after market sender will work w/the stock gauge. i think the 510 uses the same values too.