MarkB Posted March 2, 2017 Share Posted March 2, 2017 Hi allI've had a couple of kenlow fans that have been previously used on other triumphs many years ago and decided to fit one to my Vitesse I am restoring. I couldn't remember how they are wired incorporating an override switch for the odd traffic jam on a hot sunny day. I found some instructions for one of the older fans I have and have wired up accordingly. I have fitted the Live wire to the C terminal as per the wiring diagram. A sticker on the controller says that the C terminal is for the earth? and on another controller I have a wire goes from the C terminal up to a spade on the body. I have not tried to heat the sensor to see if it works as I am a concerned if I have wired it up correctly.I have a separate live that runs to a switch on the dash and back from the switch to the NO terminal, and then a another from the NO terminal to the fan. The other wire from the fan goes to earth and the controler is also earthed. The fan operates when I switch the override switch on.Is it correct to run a Live to the C terminal when incorporating an override switch?ThanksMark Quote Link to comment Share on other sites More sharing options...
Dannyb Posted March 2, 2017 Share Posted March 2, 2017 You have wired it correctly according to your comments and the diagram. not sure why it has the earth on the sticker of C. Quote Link to comment Share on other sites More sharing options...
Steve AKA vitessesteve Posted March 3, 2017 Share Posted March 3, 2017 Assuming your car is negative earth it should be OK. Only other thing to check is that the fan is turning the right way. Quote Link to comment Share on other sites More sharing options...
piman Posted March 3, 2017 Share Posted March 3, 2017 Helo Danny, there are two ways of connection, switched feed or switched earth, I suggest the picture shows it designed for switched earth. Really it makes no difference in operation but switched feed is more conventional generally. (except for horns)Alec Quote Link to comment Share on other sites More sharing options...
MarkB Posted March 4, 2017 Author Share Posted March 4, 2017 Hi allThanks for the replies and info. Filled the car with coolant ran up to tempreture and the fan operates fine wired as per the diagram, switching on and off, so that's another job jobbed. Quote Link to comment Share on other sites More sharing options...
coupland Posted November 11, 2018 Share Posted November 11, 2018 Quoted from MarkB- Hi allI've had a couple of kenlow fans that have been previously used on other triumphs many years ago and decided to fit one to my Vitesse I am restoring. I couldn't remember how they are wired incorporating an override switch for the odd traffic jam on a hot sunny day. I found some instructions for one of the older fans I have and have wired up accordingly. I have fitted the Live wire to the C terminal as per the wiring diagram. A sticker on the controller says that the C terminal is for the earth? and on another controller I have a wire goes from the C terminal up to a spade on the body. I have not tried to heat the sensor to see if it works as I am a concerned if I have wired it up correctly.I have a separate live that runs to a switch on the dash and back from the switch to the NO terminal, and then a another from the NO terminal to the fan. The other wire from the fan goes to earth and the controler is also earthed.The fan operates when I switch the override switch on.Is it correct to run a Live to the C terminal when incorporating an override switch?ThanksMark Quote Link to comment Share on other sites More sharing options...
glang Posted November 11, 2018 Share Posted November 11, 2018 Hi, have you missed out on writing something? Quote Link to comment Share on other sites More sharing options...
coupland Posted November 11, 2018 Share Posted November 11, 2018 Hi Mark, I have exactly the same problem that you had. can you please tell me if connecting a live to the C terminal worked for the thermostat control. I have my override switch live feed connected to the NO terminal which then leads on to the fan, as you had. I can not understand how the live feed goes to the thermostat control otherwise as the NC terminal is not used. like you, mine shows the C terminal to be the earth. All the wiring diagrams I can find on the net include relays which are not needed on on my 1972 TR6. could you send me a copy of your wiring diagram please? Regards. Peter Quote Link to comment Share on other sites More sharing options...
glang Posted November 11, 2018 Share Posted November 11, 2018 I think we need to make sure we're all talking about the same set ups here as theres an electronic controller with a sensor that pushes into the radiator fins and the older mechanical thermostat that has a copper bulb that is fitted inside the top water hose..... Quote Link to comment Share on other sites More sharing options...
glang Posted November 11, 2018 Share Posted November 11, 2018 ok looking on line I think you have the mechanical type where C means common, NO normally open and NC normally closed. The 12v supply needs to go to C then when the thermostat operates (engine temperature high) the contacts will close and 12v will appear on the NO terminal. The fan should be supplied from this NO terminal using one of its connections while the other connection on the fan needs to be solidly bolted to the vehicle body somewhere. Which way round you use these connections will change the direction of rotation of the fan so you may need to swop them over later. Any overide switch, when operated, should take the 12v supply direct to the NO connection either on the thermostat or fan depending on which is most convenient. Obviously both the thermostat supply and overide one must be adequately fused (can be the same fuse) and the cables used correctly sized. Hope this helps Quote Link to comment Share on other sites More sharing options...
glang Posted November 11, 2018 Share Posted November 11, 2018 Oh and heres some good instructions: https://www.angloparts.com/pdf_fitting_instructions/060.138_MKII_alu_rad+fan.pdf Quote Link to comment Share on other sites More sharing options...
coupland Posted November 11, 2018 Share Posted November 11, 2018 Quoted from glang- Oh and heres some good instructions: https://www.angloparts.com/pdf_fitting_instructions/060.138_MKII_alu_rad+fan.pdf Quote Link to comment Share on other sites More sharing options...
coupland Posted November 11, 2018 Share Posted November 11, 2018 Hi Glang, Thank you very much. That explains all I wanted. My bulb fits in the top hose as you say, and fitting the live to the C now makes sense. Regards. Peter Quote Link to comment Share on other sites More sharing options...
glang Posted November 11, 2018 Share Posted November 11, 2018 Theres one other thing you need to decide now and thats if your going to use a permanent supply or switched. The former allows the fan to run after youve stopped and on my car limits the stationary temperature very effectively (the coolant still flows after stopping due to natural circulation) but you run the risk of the fan not stopping through thermostat failure or leaving the overide on and so flattening the battery..... Quote Link to comment Share on other sites More sharing options...
RobPearce Posted November 12, 2018 Share Posted November 12, 2018 Quoted from glang- but you run the risk of the fan not stopping through thermostat failure or leaving the overide on and so flattening the battery..... Not just failure. I had one of those Kenlowe stats on my Vitesse for a while. If the coolant level got low, the bulb would heat up and operate normally when driving but after stopping the engine it stayed hot for hours even though the bulk coolant was cold by then. Quote Link to comment Share on other sites More sharing options...
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