My 1966 TSM says that the temp sending unit should read 70 ohms when cold and 120 ohms when 212 degrees. I measured my new unit and the old unit after removing it from the engine and NEITHER one reads anywhere near 70 ohms cold. I get 268 ohms cold with the old one and about 258 ohms on the new one. That is reading it from the electrical connector to the brass sensor that goes into the block. What am I doing wrong. The TSM doesn't anything about whether the gauge wire has to be connected to the unit while it is screwed into place. Jay _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com