Hi
To expand on what Rob just mentioned the Ohms ranges of the sender and gauge units. Was just looking at this web site which offered some interesting information on universal sender units
http://www.tanksinc.com/index.cfm/pa...rod/prd276.htm
Looks like your current unit is missing the arm but does the little gear shaft still turn? If so you maybe able to get an Ohm reading on the range.
Does anybody have written down what the CMP gauge Ohms ranges are? Are the round gauges different than the earlier commercial cluster units?
Gary which instruments does your C15 have the round military or the earlier rectangular unit?
Cheers Phil