Does anyone here know the resistance specs for our fuel senders??
I have a Dakota Digital gas gauge i want to install in my truck

It ca be set for:

Sender type...........................Empty.............. .........................Full

GM 0 - 90............................0 ohms...................................90 ohms
Ford....................................73 ohms..................................10 ohms
VDO....................................10 ohms.................................180 ohms
Stewart Warner / Sun...........240 ohms................................33 ohms

Am i right guessing that the VDO setting is the right one, since out gauges are VDO??

 

I wish I had the answers for you. I'd like to install aftermarket gauges to replace my entire cluster and would like to know the same. I never thought to measure the empty to full ohms range of the sending unit while I had it out last year.

 

Empty Graduation 90 ohms +-3 ohms
Enpty stop Greater than 96.5 ohms
Full Graduatiion 12 ohms +- 3 ohms
Full Stop less than 8 ohms
1/2 45.3 ohms +- 3 ohms

Sourse '93 Service manual

Bob

PS Note the above change in the Service Manual Year!

 

120 is empty, 10 is full. Ours work the opposite of newer trucks.

 

Would that range happen to be correct for all sending units, '89-'93?