is the sending unit 30 or 90 ohms do you know. sometimes it is a ground problem
ron.
a lot of the replacements are 90 ohms which was 66 and most prior to that were 30 ohms sending units

http://s908.beta.photobucket.com/user/padresag/library/turned%20works
http://s908.beta.photobucket.com/user/padresag/library/furniture
and a little history of where I come from
http://forum.woodenboat.com/showthread.php?156542-old-boatshop-in-Steveston