I'm using a similar set up to Wedgie Kway on my V8, but with the adaptor from X-eng. (
www.x-eng.co.uk) The thermostatic switch insert they supply is designed to switch one fan on at 88 degrees C and off at 83. It has a second pair of terminals which switch on at 92 and off at 87. My fans seem to stay on forever once they are on. I'm running with an 82 degree stat.
What switch values are other using?
1980 DHC TR7-V8 (was an 8V, then a Sprint)
Back on the road after 3 years restoring...