50 Merc Fuel Sending unit

I just purchased a 50 merc original gauge cluster and it wont be here for 2 weeks. Does anyone know the ohm range of the original fuel gauge ? Im trying to buy an aftermarket 5 hole sending unit for the tank so I can put the body back on. Just lacking knowing the ohms on the original gauge to get the correct sender. Let me know. Thanks

 

i believe the sender you will need will be 73 ohms empty and 10 ohms full

check this out:

http://www.yogisinc.com/detail.cfm?Product_CD=TAN-ORG

 

Thanks man

 

Original sender was not just a variable resister but consisted of a bi-metal strip and a set of contacts that cycled open and closed.

 

Ya but this is a new tank from Yogis and it takes a 5 hole aftermarket sending unit. Not the original tank with 6 hole.

 

I just got one from Mac's Antique Auto Parts for my 51 in the correct ohm range and bolt pattern. Works great!

 

DR dave what was the ohm range or yours ?

 

The one I got from Macs reads 12 ohms full and 98 ohms empty according to their catalog.