Fog Light Switch

[chrisandmark]

And could it be a relay?

[Frag]

I could fix this very quickly if van was in front of me,but trying to suss it out over internet and with no wiring diagram is ‘painfull’
Early mk5 switches the positive feed to motor to vary speed through resistor,I don’t even know if your is same or earth switched..
Best I can suggest to try figure this,plug everything in except the motor.
See if you get any voltage at either terminal in motor connector.
With ignition on and at each fan speed.
Also check for a voltage supply Upto switch connection,switch disconnected,ignition on.

[chrisandmark]

Totally understand I have a very very basic knowledge of wiring,electrics,have difficulty taking in advice if not showed in the flesh ,so to speak,got a manual ,but wiring diagrams ,dont mean much to me either.im in Birmingham, are you far from me,dont mind travelling and obviously paying to,get it sorted,hate having things that don't work correctly.just wanted to say thank you for your patience and sticking with it.cheers .

[Frag]

Right,
Got the correct diagram.
The 30A fuse F1 violet and orange goes straight to motor.
White and black from motor goes to white and violet at resistor and black and orange at switch
Black at switch is earth
Black and yellow
Black and blue,
are straight from switch to resistor.

Fuse F1 is live from a bus bar in fuse box via the ignition relay K41

[chrisandmark]

Ok,will try what you said a few comments back, will update tomorrow.

[chrisandmark]

Dont understand last bit, will have a try though.

[Frag]

Now I know how it’s wired.
With ignition on,see if you have 12V at the violet and orange wire at heater motor plug first.
If not check the fuse F1 is live both sides of fuse,again battery voltage.

Forget the earlier checks I said,that would apply to earlier van not yours.

[chrisandmark]

Ok ,that sounds easier to understand,I'll try that.thanks.

[chrisandmark]

F1 fuse,green 30amp fuse,heater fuse is live both sides.

[Frag]

Ok,
Check it’s still live at the heater motor 2 pin plug,violet and orange.

If that’s ok,
Then Bridge pins;
4 black
And
2 black and orange at the heater switch.
That should make fan run at full speed.(whether resistor is plugged in or not,and if it’s good or shot)

[chrisandmark]

Hi,have power at motor switch .have bridged pins nothing happening,ignition on and off,does have power though.

[Frag]

Hi,have power at motor switch .have bridged pins nothing happening,ignition on and off,does have power though.

Just to clarify power at motor ‘switch’ connector,or heater motor connector ?

[chrisandmark]

Have power at motor switch,also have power at heater 3 speed switch,bridged pins but nothing ,have dull light on my home made tester light.

[chrisandmark]

Do you need a pic?

[Frag]

Find a piece of wire long enough to fasten it to a good clean earth,with ignition on and motor plugged in.
Bridge the black and orange wire (pin2) at heater fan switch to earth....