Spot light switch - what are the wires?!

[Hector_the_dog Junior Member Find all posts View Profile Close Hector_the_dog]

I've just bought a spotlight switch from Ebay in readiness for my install. It has four wires - black, yellow, green and blue. Now I'm almost certain that they're for power, earth, switch illumination (with interior lights) and switch from the full beam. However, I have no idea which one is which and the site (or google) has no info. All switches I've seen on line have a red wire. Does anyone have any ideas? There's a relay in the harness if that makes any difference.

[LeighW Avid PP Poster! Find all posts View Profile Close LeighW]

Can you post up a link to the one you purchased, generally the switch just plugs into the harness?

[GX-D4D Banned Find all posts View Profile Close GX-D4D]

Well you can assume the black is earth so connect that and then provide a positive feed to the other wires, so then you can eliminate the switch illumination and yep a link to the switch will definitely help

[Hector_the_dog Junior Member Find all posts View Profile Close Hector_the_dog]

The harness and switch are from different suppliers. The harness does come with a switch, it's just a generic round one so I wanted one that fits into one of the existing blacks in the car. There is no info on the ebay site where I purchased it! I think it might just be a case of trial and error!

[GX-D4D Banned Find all posts View Profile Close GX-D4D]

I’ve just had a look on eBay most of these switches come with 4 wires, 2x red, 1x green and 1x black, green is to your source with inline fuse, the other 2x are acc and illumination

[Pradosaur Member Find all posts View Profile Close Pradosaur]

Id go in order as they appear in the switch earth, vehicle dash light , load spotlight relay (86), power. Assuming they’re all in one line

[LowRange Member Find all posts View Profile Close LowRange]

Try this

[Hector_the_dog Junior Member Find all posts View Profile Close Hector_the_dog]

I had a look again at the ebay site and they had a small diagram showing the same connector but with different coloured wires! I think I'll go with the order they stated, despite the different colours.