You may be better tapping into the wiring harness near the tailgate.

 

But if i wish to get "remotelead" from the rearfogswitch light to the relay which i install then i have connect remotelead to lightswitch

You can connect every other lead to car harness, parklights, brakelights, reverselights, but rearfog lamp wire is continuosly 12v. And rearfog earth is also 12v and when you toggle switch (put on rearfoglamp) the earth wire goes round 160 ohm to resistance and connect to earth somewhere between bodycomputer module and lightswitch.

 

I didn't realise that but the actual fog lights must be being powered by a 12 volt supply, pos and neg, so I would either tap into the wiring at the actual fog lights or even fit a seperate switch on the dash.