Can someone verify the ohm resistance range is for the stock fuel sender in a 1978 XJ-S?
I'm contemplating doing a custom dash with VDO gauges.

FWIW my car is not a survivor and had the original V12 replaced with a small block chevy back in '88 - I'm having fun with some tasteful resto-mod updating and looking to do a custom dash / aftermarket gauges to also correct a failed mechanical speedometer.

Thanks, Steve

 

Based on other Jaguar's of a similar vintage, my guess is the range is 25-250 ohms. From the XJ40 sedans onward the range was 90-900 ohms.

 

Thanks Jagboi64
I take it if this is the correct range that 25 is full and 250 is empty?
Any idea on how far off a gauge w/ a range of 33-240 would be?

I know there are some fuel gauges out there that are fully programmable from AutoMeter and SpeedHut - the SpeedHut gauges have me very intrigued, I like how they can be customized and reading good reviews.
A standard VDO setup will be cheaper if it works.

 

Yes, 250 empty and 25 full. For a 33-240 gauge, it probably wouldn't show full when the tank really is, but the empty should be fairly accurate.