So ive bought a set of fog lights on Ebay (yay me lol) and i have them installed as of sunday. The only thing is i did it just like it was set up to be hooked up but the fog lights have their own switch that has nothing to do with the head lights. just ran to the fuse box for ignition, battery for power then the switch, grounds, ect. What im wondering is, is there any way to hook it up factory way with out the ek harness? can i take the ignition "plug" and hook it up to the OEM fog light Plug on the engine harness and it will work with the headlights, cut off with high beams, ect? Does anyone know where i may be able to find the regular OEM harness with out costing a arm and leg? Can just hook the "battery" connector to the fuse box for ignition power and run the "ignition" plug to the OEM engine plug and it will work fine? i wanna know before i start experimenting and end up doing a bunch of unneeded work. Any help on this would be great and ive researched and researched and found where i can do it through the engine harness plug but i have to have a "4 pin plug" for under the dash? maybe i would need to locate the fuse for the "OEM fog light" in the fuse panel and install a fuse? im actually getting confused on this so please anyone else with EK fog lights and that have done them let me know. In my state (VA) we must have them cut off with high beams also. that's the main reason im trying to get this work all OEM, instead of taking it all out next inspection.

 

and now ive found something about the female slots in the fuse block above the fuses. as the second one from the left being a "dashlight power source" maybe hook it up through there as far as just the lights working with the headlights? anyone ever heard of this one?

 

found this on a saturn forum after googling, the concept sounds the same. hopefully it helps ya out


I wouldn't wire them directly into the headlight circuit for the exact reason stated... The current draw of the fogs combined with the current draw from the headlights is more than likely going to pop a fuse...

What I would do in your case if you only want them on with the low beams for example is this...

First, an explanation of what a relay is... Relays for dummies, if you will...

It's basically an electronic switch... I would try to find a 5 pole (terminal) relay. 3 of the terminals will be the actual switch. A common pole, a normally open (N.O.) pole, and a normally closed (N.C.) pole. The other two terminals are like an electromagnet, and when energized (using very low current draw) pull the switch mechanism from the normally closed pole to the normally open pole.

You with me so far?

So, to safely implement foglights you would want to run a wire from your battery to the normally open pole of the switch side of the relay; you will want to have a fused link on this wire with an appropriately rated fuse (15 Amp most likely).

Next, run the common pole from the switch side of the relay to the positive lead of both fog lamp assemblies.

Next, choose an appropriate location and ground the two negative leads of the fog lamp assemblies. From this ground point, also run a ground wire to the negative side of the electromagnet side of the relay.

Lastly, you will run a wire from the headlight low beam output to the positive side of the electromagnet side of the relay.

The following advantages will be seen when using this wiring scheme.

1. The fog lights now have their own independantly fused circuit, so if they blow up, the headlight circuit is isolated

2. The fogs are "switchless" meaning you don't need a retarded switch mounted to your dash... They simply energize any time the low beams are active...

3. The relay when in an idle state is not passing voltage to a terminal with nothing attached to it. The normally closed terminal will have nothing attached to it, so if you applied 12V from the battery to the common pole of the relay, this terminal of the relay would be hot when the lights are off... Not good, easy to short. Instead, +12V is isolated from the circuit until you turn the lights on...

In short, here is what is happening.

You turn on the headlights, which passes a +12V signal to the positive side of the electromagnet. The electromagnet energizes, pulling the switch arm to the normally open pole (which is wired to +12V from the battery). +12V passes from the battery via the normally open pole to the common pole and out to the fogs. Lights turn on!

Sorry if I made this too basic, but perhaps that explanation will help out more people that just yourself.

Hope it helps too... Let me stress the importance of having the fog lights independantly fused... If, for example, you are driving in the rain with the fogs on and it happens to be the darkest night ever... A rock breaks the fog lens, water gets in and shorts the bulb. Fuse pops...

If, in this scenario, you were running straight off the headlight circuit, you would be fu*ked cause you lost your fogs AND your headlights... If they are independantly fused and something like that happens, you only lose your fogs, no biggie..

 

actually thats great! would there be anyway to do it with the parking lights yet cut off with the High beams? (prob not but worth a shot) and where would be the best place to install a switch on that set up. Id still like the switch because here in Va we must have our headlights on if the wipers are on IE rain. but if its during the day id rather not burn the fog lights and be able to cut them off. Should i just run the switch through the main power wire? Im just getting into the whole "relay" knowlege also. Could i have it switched on with the running light and driving lights both running through it but elimate the fogs then the headlights turn off and high beams kick in (if that makes any sense)? i mean if worse comes to worse i can just link the fuse for a quick "ghetto" way out and fuse the fog lights seperatly thru the running lights. but getting them to cut off for high beams is mainly what im after and i believe thats only gonna work through the OEM plugs.