Fuel Sender

[Kofoed]

Is the factory sending unit (and more importantly the fuel gauge) 0-90 ohms at 12v???? I am trying to source a sender for an auxiliary fuel tank project, rounding up parts prior to burning metal. I'd rather go with an aftermarket sender due to flexibility in size and $$$

I would like to wire the aux tank sender to the dash gauge via a 3 position switch.....