we put one on not long ago to our 94.
we wired 4 'ring' rectangle lights, we did it seperately, 2 on drivers and 2 on passengers, and ran the wires along the bar itself (couldnt be bothered driling into it), then wrapped them together and ran them down from the bar support, along the side of the window taught, and then under the bonnet. Leading to 2 seperate relays, which runs to the battery, and an earth, and a couple of switches that goes into the cab. These are linked to the main beam circuit, in the wiring loom under the dash. That way i need to turn the switches on AND have main beam on for them to work.
Mounting wise, usualy the bars bolt through the guttering on the sides, drill 2 holes on either side, and these bolt the bar to the car, suprisingly sturdy.
Anythin else? and incse your wondering i got mine off ebay, £89 including lamps and delivery. But i had to get the parts meself, relays, switches and wire and connectors, but i'd already done afew lamps so i knew what i wanted. I used 6 reels of 4m wire, as you have to trim bits off extra.
anything else? can't think what else, give us a PM if so.....
bex and tom