your autogauge should come with a separate sender, u could try to measure the resistance of both senders with a multimeter,when their about equal u could just split up the ford sender. otherwise, you might want to fit the sender into yr thermostat housing, theres a hole in it which u need to drill out,the sender fits in quite nicely,its just taps itself into the alloy.apply a small coat of glue around the top of the sender and the housing,job done.