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High beams on without low beam?

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Old Jun 8, 2014 | 07:06 PM
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Default High beams on without low beam?

Does anyone know if its possible to get the high beams to power on without having the low beam HID power Up aswell? I'm guessing its a relay issue with power running through one for both lghts. Has anyone sepearated them?
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Old Jun 9, 2014 | 01:49 PM
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You did not mention how you intend to operate them - which switch will be used for low or high beams?

The high beams get +12 from the headlight (low beam) relays and they get ground from the high beam switch on the steering column. This is why the high beams will only come on if the low beams are on first.

If you want the hi-lo dimmer switch to light the high beams without first requiring the low beams to be on, you will have to re-wire the +12v wires for the high beams to another power source. You could use the battery if you want them to work all the time. This would give you operation of just the high beams using the hi-lo dimmer switch - push it forward and the high beams come on, pull it back to the center position and they go out. Low beams would not need to be on for the high beams to work, but if they were on, the high beams would still work like OEM with the normal push-pull switch.

However, if you want the flash-to-pass switch to also operate just the high beams, then in addition to the above re-wiring of +12v you will have to disassemble the headlight switch on the steering column and remove the internal diode. This diode connects the flash-to-pass switch to the low beam switch, so that under normal conditions the low beams will come on when you "flash". But with the diode removed the low beams will only come on with the normal headlight switch, allowing you to "flash" just the high beams.

Another option for the flash-to-pass fix is to cut the low beam wire coming out of the headlight switch and connect it to the parking light wire, forcing the low beams to come on with the parking lights. This means you are no longer using the low beam switch contacts to turn on the low beams, which effectively isolates the flash-to-pass switch from the low beam switch as if you removed the internal diode. The advantage is you don't have to modify the internals of the headlight switch, but the disadvantage is you could never have the parking lights on by themselves.
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Old Jun 9, 2014 | 06:03 PM
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Yep a switch would do it. I just want the ability to push a switch and have the highs come on, or by using the stalk for them. The first option you listed seems right on, but with also being able to push a switch and have the lights come on by themselves. How and what would I need to cut or wire up?
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Old Jun 10, 2014 | 05:52 AM
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Originally Posted by modifry
If you want the hi-lo dimmer switch to light the high beams without first requiring the low beams to be on, you will have to re-wire the +12v wires for the high beams to another power source. You could use the battery if you want them to work all the time. This would give you operation of just the high beams using the hi-lo dimmer switch - push it forward and the high beams come on, pull it back to the center position and they go out. Low beams would not need to be on for the high beams to work, but if they were on, the high beams would still work like OEM with the normal push-pull switch.
For this option you just need to locate the +12v wires at each high beam socket, cut them, and extend the "socket side" of the wire to the battery. The other side of the cut wire should be insulated.

The +12v wires are red/wht and red/yel. The same wire colors are used for the low beams so be sure you cut the wires near the high beam sockets to be sure you are only affecting the high beams. By connecting the + side of the high beam bulbs to the battery they will now come on when you push the headlight stalk forward. Note this only works for non-DRL cars; DRL wiring is much more complicated and if you did this simple re-wire you would lose the DRLs.
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Old Jun 10, 2014 | 07:32 AM
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I have a DRL car, but do not use the DRL's currently
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Old Jun 13, 2014 | 11:41 AM
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Originally Posted by SweetWaterSurprise
I have a DRL car, but do not use the DRL's currently
So what did you do to prevent them from working?
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Old Jun 16, 2014 | 07:36 AM
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I just pulled the DRL Fuse and dealt with the Light as well.
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