Camping/Reverse lights

[GeeYou8]

On my old GU2 I had it wired so that when the driving lights switch was on the halogen reversing light came on (via a relay) when reverse was selected.
With the low current draw of an LED is it necessary to use a relay?
Three position switch, feed from reverse light to one side, fused power from battery to the other, centre terminal to LED +ve.
Graham

[Skitzyrex]

Battery positive to fuse then runs to centre pin (common) of 3 way switch (usually labelled as pin 2)
87 - One pin of switch to 87 (this will power the lights when relay is energised) so is "Rev"
87A - Other pin of switch to 87A (this will power the lights when relay deenrgised) so is "Work"
85 - Reverse positive (lights, gearbox switch or whatever) to pin 85
86 - Earth to pin 86
30 - yes, as you stated, goes to work light supply

Evil,
Hoping your genius mind can help a electrical nuffy again.

I ordered another switch which was on off on which some of you suggested however that's where it got more complicated.

Here is a pic of the wiring diagram so more than just three tabs, so hoping you can tell me which goes to where on it from the relay.
Thank you.

[the evil twin]

Pins 4, 5 and 6 are for switching your load or relays or whatever

So... 5 is common and 4 and 6 are your switched power IE 5 is 12+ and when the switch is in one 'on' position 4 and 5 will be short and when in the other 'on' 5 and 6 will be short and when in centre 5 will not be connected to 4 or 6 IE 'off'

Pins 1, 2, 3 and 7 are for the switch lighting only

Pin 7 is earth solely for the indicator lights in the switch so if you don't want lights at all no connection needed... if you want lights then that needs to be earth.
Pins 1, 2 and 3 switch the same as 4, 5 and 6.
If you want the switch internal LED lights to come on depending on switch selection simply run 12 volts to pin 2 and when you switch one way one light will come on and the other way for the other.

[Skitzyrex]

Pins 4, 5 and 6 are for switching your load or relays or whatever

So... 5 is common and 4 and 6 are your switched power IE 5 is 12+ and when the switch is in one 'on' position 4 and 5 will be short and when in the other 'on' 5 and 6 will be short and when in centre 5 will not be connected to 4 or 6 IE 'off'

Pins 1, 2, 3 and 7 are for the switch lighting only

Pin 7 is earth solely for the indicator lights in the switch so if you don't want lights at all no connection needed... if you want lights then that needs to be earth.
Pins 1, 2 and 3 switch the same as 4, 5 and 6.
If you want the switch internal LED lights to come on depending on switch selection simply run 12 volts to pin 2 and when you switch one way one light will come on and the other way for the other.

You're a legend thank you

[the evil twin]

You're a legend thank you

ROFL... dunno about that... I've been wrong more often than right lately...

[Skitzyrex]

ROFL... dunno about that... I've been wrong more often than right lately...

So using the below diagram
Reverse lights - 3 Way Switch in Rear.jpg

and the following for the switch
4 - Reverse wire from oem reverse lights
5 - Earth Being Common to both
6 - 12v from aux battery

The fuse blew straight away when turning on, so I must of done something wrong.

[GeeYou8]

So using the below diagram
Reverse lights - 3 Way Switch in Rear.jpg

and the following for the switch
4 - Reverse wire from oem reverse lights
5 - Earth Being Common to both
6 - 12v from aux battery

The fuse blew straight away when turning on, so I must of done something wrong.

Where you say "5- Earth", this should be going to relay pin 85 in the diagram.
Graham

[Skitzyrex]

Where you say "5- Earth", this should be going to relay pin 85 in the diagram.
Graham

Yes, that's where I had it. I don't understand why it blew the fuze.

[the evil twin]

Yes, that's where I had it. I don't understand why it blew the fuze.

How big is the fuse?
What wattage are the lamps?

[GeeYou8]

Your earlier post said that the lamps were 0.3 amps so they should not blow any automotive fuse, is the relay in a cradle or just connected with fast-on / spade terminals? Can you disconnect 87 at the relay & see if the relay clicks when the switch is operated, do not put the car in reverse while it is faulty or you could do some damage.
Do you have any test gear, a test light and multimeter?
Graham