To run the lights this way, you need to run a fused 12 volt(about a 10gauge wire)power source from the battery directly to the relay, you would run the two lights off of the relay. To activate the lights run a line from the low beams lead to the switch on the dash, than a line from the switch to the relay, this would be the trigger for the relay. This would allow you to turn the driving lights off when you wanted just low beams, and would switch them off when you put the high beams on.
![[Linked Image]](http://img.photobucket.com/albums/v33/Snowtoy/Lightrelay.jpg)
If you wanted to be able to run the lights w/o the head lights being on, you couild run an additional switch and relay to the lights directly.
Instead of a second switch or relay, I use a 3 pos. (micro = OK) switch on-off-on (couple $$ at radio shack) and run one side from headlite wire (hi or low, yer choice) and one side from 12v. The center wire would then go to 'trigger' described above.
I often use a double pole switch which allows me to run seperate indicator lites. For this, run 12v to the 'other' center, and a wire to a lite (then to ground) on each side. You can also parallel off output from relay for indicator lites, but that usually requires more wire (put the relay as close to battery and fog lites as possible). I have added LED's to dash near hi-beam indicator. <img src="/forums/images/graemlins/smile.gif" alt="" />
The size of the wire only matters battery to the relay and relay to lites. Bigger is better! The wires to and from switches and indicator lites should be small so they're easier to use and hide. These wires don't draw much power at all.
<img src="/forums/images/graemlins/cheers.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />
