Was this a factory kit you bought, or did you buy all the bits separately.
If it was a kit, then there should have been a instruction shhet with it.
I would try the following.
The wires that go from the relay to the lites, by pass the relay by removing the wires. Apply a jumper lead to the battery positive, will only need to be a light type of wire, and see if the lights come on.
Very good chance that the lite will. In that case you have ruled out a problem withing the lamps, which could most likely be a bad earth. Or the bulbs are bad.
If the lites work OK, then try putting power to the relay, if the lights work you have ruled out two problems, if the lites do not work, then you have a bad relay.
If the lites still work through the relay, then the next likely problem is the from the switch to the relay. Remove the switch and remove the wire from the switch to the lites, put your trusty jump lead to that wire and the lites should come on.
Now that does not yet mean the switch is bad, because the switch may not be getting any volts. Take off the power lead to the switch, that is the one coming in and put your 12 volt jumper lead to input side of the switch, turn the switch on and your lites should come on. If they do not then you have a bad switch.
Switch Ok then we must consider that the switch is not getting any power from the fuse. You can check that with either a voltmeter, by the way these are only cheap to buy, $5 should get you one, or by using a bulb applying the lead that goes to the switch, and by grounding the base of the bulb. Bulb should lite up.
If it does not then it means no power to the switch. So now we do what some would have done first, check the fuse for the fog lites, it may have been blown whilst you were putting all the bits in.
You must do this task in a logical way, checking what is good, coming back up the line, one stage at a time.
The only other thing it can be, is the fuse board not allowing power through, and in your case I would suggest you get a auto electrician check that, as you could cause more problems than you solve.
Regards
Col
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