Adding fog lights.

this is baffeling me. I've installed a new set of foglights on my mitsubishi eclipse. And i'm curious as to how to tap the current wiring so they will turn on with headlights rather than with a seperate switch.

Any suggestions?

Also anyone know where i can find the rear mounting brackets for the 6x9's.

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Either gas, grass, or ass (ladies only!) but no one rides for free.

well theres two ways to do this depending on what you prefer in that car i think theres a red negative headlight wire at the switch if you want to use it there then you will need a re;ay pin 85 would be that red wire pin 86 12 volts positive pin 87 to the fogs pin 30 goes to 12 volts positive now heres the second way you can find the switched 12 volt positive wire at the healamps thats the wire that will show 12 volts when the headlights are on well wen you get that wire use thatas the triger wire for the fogs relays just so long that they are a positive triger if not then do it the first way

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Nice car. I likes Mitsubishi's. Lots and lots :-)
Here's how I would do it.

1. Pop the bonnet of the car. Look at the back of the headlight assembly, and note the colours of the wires that go to the headlight bulb.

2. Pull the headlight bulb out of the lamp assembly and pull the lamp out of the lamp holder.

3. a.) If you want to have the foglights on when your dip beams are on, turn your headlights on to dip/low, and test to find which wire on the lamp holder has +12 volts on it. To confirm that this is the dip/low beam wire, turn your headlights onto park. If there is now no voltage on the wire that previously had +12 volts on it, that wire is your dip/low beam supply. If there is still +12 volts on the wire, then that wire is your park light supply. Repeat until the dip/low beam wire is identified, and then note down which colour/combination of colours that wire has.
     b.) If you want your foglights to come on when your high/full beam is on, follow 3a, but with the headlight switch set on high/full beam as opposed to dip.
     c.) If you want your foglights to come on whenever your park lights are on (ie whenever you have your car lights on), follow 3a, but with the headlight switch set on park to start with, and to confirm that the correct wire has been identified, turn the headlights off completely.

4. Next to where you want your relay to be mounted, carefully unwrap the wiring loom to expose the separate wires.

5. The wire that matches the colour/s of the wire identified in 3a (or 3b or 3c!) is the wire that you want to tap into for the relay's coil supply.
Using a Scotchlok connector, tap into this wire to obtain a +12 volt signal for your relay.
If you can't find the wire in that group of wires, tape them back up with insulation tape, and try another place closer to the headlights and repeat 4.

6. Run the other necessary wires for the relay alongside the original wiring loom until they reach the required destination, and tie securely every 4-6 inches.

7. Mount and connect the relay according to the manufacturers instructions. Including a fuse between the battery and relay.

I'm not too sure of the connections etc on the relay itself, it should have a diagram with it somewhere, either on the packet or in it.
A scotchlok connector is a crimp connecter that cuts through the insulation on a wire, which means that you do not have to do any cutting of wires to tape into them.
P.S. this is how I would do it (as an industrial electrician), if you need any more help, let us know.

Happy hunting.