Each connection has the potential for a leak or failure, be sure they are secure. If you can't put a raised ring on each end of the metal tubes (sometimes difficult to find someone with "That" tool), put 4 "Dots" of weld material around the end perimeter of the tube which will prevent the hose clamp from sliding off. You can also put the fan switch in the RH lower radiator tank. I use the same 22mm fan switch pictured above, they are used on VW, Porsche and others.
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