Trinary switch ls3 Fan on with a/c

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Yeah Don, that last link was probably the one you used. I always wondered when using one of those adapters if the larger sensor body would get enough "exposure" to activate the sender trigger. Good to know they work. I had also looked into using one of those radiator hose "couplers". Most of them only had 1/4 npt threaded bung in them. You would have to drill and tap the thing for the 3/8 npt threads. In the end, I ended up getting an Entropy radiator. Nice piece, with powerful fans and it already have the correct 3/8 and 1/4 npt bungs in the unit.