Temp and fueltank sender resistance - General Discussion https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/ Discussion Board en-US Thu, 12 Mar 2026 17:52:42 +0000 wpForo 60 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13958 Sat, 25 Oct 2025 16:00:45 +0000 Thank you Glenn, you're the man!!! So glad i joined club, there are so helpful people here!

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13958 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13953 Sun, 19 Oct 2025 15:05:29 +0000 Jarmo-

Your service manual explains this in the Electrical and Instruments chapter on pages 50 and 51.  Section b. on page 51 tells about the 5 volt step down.

For reference, here are some readings I was able to take:

Full fuel tank sender resistance- 1959 DeSoto 22 Ω, 1965 Chrysler 12 Ω, 1966 Dodge 5 Ω.

Temperature sending unit cold/normal operating temp-  1959 DeSoto 1100/70 Ω,  1966 Dodge 500/33 Ω.  The 1965 Chrysler only has cold and hot lights, no guage.

I hope you find this information useful.

Glenn

]]> General Discussion GlennColburn https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13953 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13946 Tue, 14 Oct 2025 11:41:30 +0000 This is from 1960 service manual:

https://forums.offipalsta.com/picture.php?albumid=9157&pictureid=248295

I can't see any mention of 5 volt to gauges, hmm...

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13946 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13945 Mon, 13 Oct 2025 21:05:12 +0000 Thank you Glenn. I did not know them run 5 volts. That is important, i have to contact someone, who knows electrics better than me.. 

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13945 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13944 Mon, 13 Oct 2025 13:45:53 +0000 Jarmo-

Unfortunately, the service manuals do not list the resistance of the sending units.  I was going to check the values on my 1959 Firesweep, but they may not match up with 1960.  The 1959 guages run on 12 volts, but starting in 1960 they run on 5 volts.  They may or may not be calibrated to use the same sending units.

]]> General Discussion GlennColburn https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13944 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13943 Sat, 11 Oct 2025 15:25:09 +0000 @markkubancik 

Thanks Mark!

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13943 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13941 Fri, 10 Oct 2025 16:56:36 +0000 Jarmo...I don't personally know though someone of the club's Facebook page may know. I'll post your question there and report any responses.

]]> General Discussion MarkKubancik https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13941 RE: Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13940 Wed, 08 Oct 2025 16:03:53 +0000 I forgot to say please..

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13940 Temp and fueltank sender resistance https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13939 Wed, 08 Oct 2025 15:36:41 +0000 Could someone tell me what are correct resistance numbers on temp sender cold warm and fueltank sender full and empty? Car is 1960 fireflite, 361 engine.

]]> General Discussion Jarmo Sirkia https://desoto.org/community/general-discussion/temp-and-fueltank-sender-resistance/#post-13939