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Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 12:22 pm
by RichardHyde
Hi, please could somebody advise how to wire up :-
1. Original style Kenlowe fan switch with 4 pins.
2. Relay with pins 1, 2, 3, 4, 5.
3. Thermostatic switch with 2 pins.
Thanks, Richard
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 4:30 pm
by Bumpa
I found this on a Triumph TR site when I was asking the same question. Hope it helps.
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 5:25 pm
by new to this
Ive got the same thing to wire ( fan ) but was going to use the choke switch as the over ride,not sure if the switch contacts are up to it ?
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 6:05 pm
by Mad Mart
With your relay I would suggest terminal 1 was equal to terminal 85 and 2 equal to 86.
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 8:03 pm
by Bumpa
I hadn't noticed that the relay in Richard's photo wasn't numbered in the conventional manner. I've never seen one numbered like that.
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Sep 16, 2021 11:22 pm
by soe8m
85 is ground and 86 positive...
Jeroen
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Fri Sep 17, 2021 9:50 pm
by Carledo
new to this wrote: ↑Thu Sep 16, 2021 5:25 pm
Ive got the same thing to wire ( fan ) but was going to use the choke switch as the over ride,not sure if the switch contacts are up to it ?
Choke switch? You mean that daft little thing that (in theory) puts the choke light on which clips round the choke cable?
It can probably handle the current since it's only switching the relay, but it won't do the job since it's a spring loaded "push to make" switch except it's actually push to open, the default position is on! Rather like a brake light switch, but smaller.
I guess the thinking is to use the choke warning light, redundant on an EFI car, to represent the fan over-ride. I've used mine for the "Sport Mode" warning light on the transmission, by the same bit of lateral thinking. Be aware that the warning light is ign live powered so the switch is earthed. Changing this to earth inside the warning light display is tedious and difficult, but can be done. Ask me how I know! I did the mod then found out I needn't have bothered as the sport mode light wire needs power, not earth! This mistake fried the trans ECU and I had to buy another, we live and learn!
Steve
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Sat Sep 18, 2021 6:53 pm
by naskeet
Bumpa wrote: ↑Thu Sep 16, 2021 8:03 pm
I hadn't noticed that the relay in Richard's photo wasn't numbered in the
conventional manner. I've never seen one numbered like that.
Conventions vary from one country to another! It was one of the objectives of the European Union to standardise such things.
The relay terminal labels 30, 85, 86 & 87 are part of the German DIN standard for automotive electrical terminal labels, with which I am relatively familiar, given that my other vehicle is a 1973 VW "1600" Type 2 Westfalia Continental motor-caravan.
I think I still have my Kenlowe "Thermatic" fan literature and wiring diagrams at home; which date from circa 1982.
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Sat Sep 18, 2021 9:41 pm
by new to this
Carledo wrote: ↑Fri Sep 17, 2021 9:50 pm
new to this wrote: ↑Thu Sep 16, 2021 5:25 pm
Ive got the same thing to wire ( fan ) but was going to use the choke switch as the over ride,not sure if the switch contacts are up to it ?
Choke switch? You mean that daft little thing that (in theory) puts the choke light on which clips round the choke cable?
It can probably handle the current since it's only switching the relay, but it won't do the job since it's a spring loaded "push to make" switch except it's actually push to open, the default position is on! Rather like a brake light switch, but smaller.
I guess the thinking is to use the choke warning light, redundant on an EFI car, to represent the fan over-ride. I've used mine for the "Sport Mode" warning light on the transmission, by the same bit of lateral thinking. Be aware that the warning light is ign live powered so the switch is earthed. Changing this to earth inside the warning light display is tedious and difficult, but can be done. Ask me how I know! I did the mod then found out I needn't have bothered as the sport mode light wire needs power, not earth! This mistake fried the trans ECU and I had to buy another, we live and learn!
Steve
Thanks for the heads up about warning light display
Dave
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Sat Oct 02, 2021 7:29 am
by RichardHyde
With Jeroen’s help, I’ve done this diagram for future reference.
Cheers Jeroen !!
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Wed Oct 06, 2021 7:33 pm
by naskeet
RichardHyde wrote: ↑Sat Oct 02, 2021 7:29 am
With Jeroen’s help, I’ve done this diagram for future reference.
Cheers Jeroen !!
I am still trying to fathom what the rectangle with the labelled boxes 1, 2, 3, 4 & 5 represent!?!
I presume the big circle with the St. Andrew's cross inside represents the fan motor!?!
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Oct 07, 2021 12:43 am
by Mad Mart
Have a look here...
https://www.12voltplanet.co.uk/relay-guide.html
Yes, the circle with the cross is the fan.
Re: Kenlowe fan override switch, relay and thermostatic switch
Posted: Thu Oct 07, 2021 9:52 am
by RichardHyde
In the top left corner of the diagram, I’ve included the mapping from pins 1,2,3,4,5 to the DIN 85,86,30,87a,87.
I think the 12VoltPlant website says 1,2,3,4,5 followed by DIN pins in numeric order eg 30,85,86,87,87a which is incorrect.