About 4 years ago I was idling in traffic for quite a while, comfortable that my puller fan was working fine because I had switched it on with a manual dash switch. Eventually I noticed the engine temp was higher than it should be. The fan had switched off because a thermal breaker had reacted.
Subsequently I upgraded the wiring, used a different breaker and added a light that illuminates when I switch the fan on from the dash, or when the thermostat triggers the fan on.
