Ok, so I just installed an HID kit with Harness. I have Fog lights, Low Beam, and High Beam all in HID. PROBLEM: When I run headlights and foglights, my fogs do not turn on, but my brights turn on. the only way to turn the brights off is by turning off the fogs. Next problem: I will have headlights on, switch my brights on, brights will stay on until i turn the light off. I dont know what the hell is wrong, weirdest thing I've ever seen. Hopefully, it isnt something very serious. Thank You!

 

I had a similar problem. I was told to put a heavy duty harness on the HID's but it didn't help. It made it act even stranger. I tried everything to get mine to work correctly. I ended up scrapping the kit I had and wrote I off as a faulty kit. Have you noticed if your having an issue with your high beam indicator coming on very dim when the lower driving lights are on??? If so, it because of Fords crappy bass ackwards -grounds. The lights are searching for a better ground and it hits through the indicator. So you might want to try the Bambi mod on your truck. You basically chassie ground one of the relays. There are a bunch of very detailed threads on this mod. Pics are very good too. It requires one wire a few inches long with a loop conector and a female spade. Its incredibly easy. If you haven't done it yet,,,, that a perfect place to start!

Good luck bro! PEACE!

 

You should start with what is commonly called the bambi mod on this forum.
You removed what the fog lamp relay coil uses for ground, so it is trying to use the high beam indicator as a path to ground.

Is the kit one of the cheap ones that uses the factory bulb connector to power the ballasts or is it a relay to the battery, and the bulb connector triggers the relay ? Should be 2 relays in the harness, or the ballasts has a power and trigger wire.

 

Ok I will search for this Bambi Mod thing. Yea when I turn my fogs on, the Highbeam light goes on, but dim. The harness: theres a power wire running from battery to the relay, a chord running from the stock lights to the relay, then two wire running to both ballasts which connect to the lights. Only one relay though.

 

Here is one of the many threads on the topic

https://www.f150online.com/forums/el...aybe-04-a.html

There is only a single relay, but it is a high - low kit ?

Not sure how you are triggering the high beams with that.

 

Well since the regular headlamp plug is connected into the relay which connects to the 2 lights, It triggers both of them. There are like 8 chords in the relay switch, weird switch. I looked at the mod and it looks easy enough, but will it solve the problem of when I turn my brights on they stay on until I turn off my lights?

 

The mod will take care of the fog lamp relay coil using the high beam indicator as a path to ground.

Still not sure how 1 relay is being triggered for both the high and the low. That does not make any sense, either it is going to turn on the low beam or the high beam, 1 relay cannot do both, unless it is an expensive dual coil, dual SPST relay, which costs about 3x a standard auto relay costs ( the Square-D line )

 

Oh yea also, this might be solved by the Bambi Mod, but when I put my fogs on with my headlights, my brights turn on...

 

You will need to see if it is due to the fog lamp relay coil trying to use the ballast as a source to ground.

You modified the high beam circuit, can't expect it to work the same.....

 

I have a similar setup. The harness i have uses a diode to connect both the high and low inputs from the OEM plug to activate ONE relay. The high also has a branch that powers the small electromagnet in the bulb move to the high position when the highs are active and the diode keeps the power from the low side from activating the bulb when in the low position.
So essentially the relay keeps the ballast on all the time, hi or lo, while the high position simply keeps the relay active and moves the bulbs into the high position.



To the OP, Check to see if you have a small square diode. If you do simply pull it out and turn it around, it should prevent current from backfeeding into the trucks plug. It should solve your problem.

 

Motorized High beams, not a separate bulb. Got it now.

I was thinking along the lines of 2 set of HID ballasts, but it is more along the lines of this kit ( this is the ballast is powered all the time, the high & low beam circuits are only triggers )

 

hey fabian can you explain where this diode is exactly?

 

Yea thats basically it. Mine doesnt have that little controller box though.
Just a simple plug in with the diodes and a relay.

Mine is actually right off the plug that goes into your factory headlight plug. Not more that 4-6" from it. It has one on each side but i took the drivers side diode out since it doesnt do anything on mine. The relay is activated via the pass side only. The plug on the drivers plugs into the small bulb connector and controls the high-lo movement of the bulb and isnt plugged into anything else so the diode isnt needed there.



A pic of your setup would be helpful.
Are your fogs running right off the factory fog plugs or is there a relay harness? What i would do is run your original fog bulbs in till you figure out the headlight prob then once that is solved install your HIDs down in the fogs because i dont think they are part of the equation. The bambi mod will simply keep them from turning off when you switch to high beams. Your problem lies in your HID headlight harness somewhere.

 

Yea ill take a pic of it. My fogs have their own ballast and everything, the only thing that affects them is the brights. But, like you said, its the stock problem. They should be up in a few

 

Heres the wires. You cant really see much, but that shows basically whats connected.

Theres the relay



This is the passenger side, the bag is to protect the harness from getting wet since its not plugged in.

Sorry for the clutter, I zip tied it all down for the time being, and I really didnt feel like un-doing all of it. If you have any questions, feel free to ask. There wasn't a diode, at least I dont think there was.


All in all though, they dont really look bad.

OHH NEW DISCOVERY. Ok so when I was taking the pics, I decided to test them out. Well the lights worked when the car was off (meaning the fogs and headlights worked together) but when I tried it while the car was on, when the fogs and headlights were on, the brights went on, which I could only turn off by turning the headlights off.