e30 fog install

[KarshS]

i need some advice on this install,

My car doesnot have the fog switch and it never came with the car, how do i go about fitting them?

I heard that the cables are already there in the main harnes.
Is this true?

Some1 done this before that can help?

Cant find a diy online

 

[hennie]

most of them just need the relay in the fuse box and the double switch for back driving lights and front fogs the wires for the front fogs might also be there