daveturnbull Posted November 18, 2019 Share Posted November 18, 2019 Quote Link to comment Share on other sites More sharing options...
Maverik Posted November 18, 2019 Share Posted November 18, 2019 Hmm, there are a lot of 12v electrical components which don;t come with any info... probably from far eastern origins. Quote Link to comment Share on other sites More sharing options...
Snagger Posted November 18, 2019 Share Posted November 18, 2019 That looks like a modification to a Kenlowe Hotstart, so it’s DIY. Not sure where the Kenlowe was made, but I don’t think it was China. Maybe it was altered to bypass a failed thermostatic switch, in which case it was asking for trouble regardless of switch rating. Quote Link to comment Share on other sites More sharing options...
daveturnbull Posted November 18, 2019 Author Share Posted November 18, 2019 It was definitely a DIY effort. Now removed and wiring replaced where melted. Just need to rig up a little test bed to check the rest of it works fine before fitting. Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted November 18, 2019 Share Posted November 18, 2019 I've seen worse. I had an escort that when I acquired it had a manual switch under the dash to operate the fan fitted by a 'professional' auto electrician to deal with a persistent overheating problem, caused by the fan not cutting in, that he hadn't been able to solve. Not only was the original problem solved in minutes by simply replacing the failed thermostatic switch in the coolant pipe, but the bypass had been wired entirely with bell wire - taking the full current through the fan. The switch itself (similar to the one above) had survived, but the entire run of wire was blackened. Utter miracle it hadn't set the car on fire! 1 Quote Link to comment Share on other sites More sharing options...
HoSS Posted November 20, 2019 Share Posted November 20, 2019 Thats not the switch that has failled but the connections. There green copper corrosion that could have started the bad contact. Or it was just poor quality crimps or bad crimping. Quote Link to comment Share on other sites More sharing options...
daveturnbull Posted November 20, 2019 Author Share Posted November 20, 2019 The switch casing was quite blistered on the sides, and there was next to no resistance left on the lever. My money is on the switch getting very very hot, and the plastic on the terminals being a bit softer (and thinner) than that of the switch body. Crimps looked quite good for what it's worth. 1 Quote Link to comment Share on other sites More sharing options...
HoSS Posted December 10, 2019 Share Posted December 10, 2019 No the heat source is a loose crimp to spade, or bad crimp to wire, the switch may look heated as the heat gets conducted and warms everything, I'll put money on that see it too many times. Quote Link to comment Share on other sites More sharing options...
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