Halo headlights and turn signal question

Discussion in 'Electrical and Ignition' started by prorac1, Nov 27, 2018.

  1. prorac1

    prorac1 Well-Known Member

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    My son Jason ordered LED halo headlights for his project 63 valiant.

    My plan is to wire the HALO trigger wire into the parking light wire.

    That way when the parking lights are on, the HALOS are on. But when the headlights come on, the HALOS turn off.

    But here's my thought.

    Could we ALSO wire the HALO into the turnsignal wire, so that the halo flashes with the turn signal?

    Or would we run into a back feed issue?

    Would all the parking lights start flashing?

    Thanks. Eric and Jason.
     
  2. Murray

    Murray FABO Gold Member FABO Gold Member

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    I think that would be illegal in California.
     
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    • RedFish

      RedFish Well-Known Member

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      Most older vehicles use a dual filament bulb, park circuit to one, turn circuit to the other. The halo is one so it must be one or the other. Both circuits attached to one would cause all sorts of back feed issues if not fuses blown or even wires melted if overload doesn't blow the fuse.
      There is a way to do what you imagine, requires modifying the front fixtures for a 3 wire socket but...
      since flashing headlights probably is illegal most everywhere, no need.
       
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      • famous bob

        famous bob mopar misfit

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        I thot about this some, I would want the halos to work when the ignition is on/daytime running lights.
         
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        • RedFish

          RedFish Well-Known Member

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          I would wire that from the interior out to the halo sockets. Maybe tap into the reverse lamps positive feed wire. I haven't thought it out really. Just the first fused lighting source that came to mind.
          There is a single switched hot wire ( blue ) in the engine bay but it has enough on it already.
           
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          • prorac1

            prorac1 Well-Known Member

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            Yeah. Besides the backfeed issue, I never thought about the legal ramifications. Good point
             
          • prorac1

            prorac1 Well-Known Member

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            Yeah, I have to agree. I think I will just wire them into the parking light wire and call it a day. The halos don't draw hardly any amperage.
             
          • RedFish

            RedFish Well-Known Member

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            If I was installing halo fixtures, I would have to consider the daytime running lamp function as Famous Bob suggested. Always on with ignition switch would shorten bulb life so how difficult it is to replace these bulbs would be additional consideration.
             
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            • roccodart440

              roccodart440 Well-Known Member

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              I would run them as DRL's or come on when running lights are on.
               
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              • prorac1

                prorac1 Well-Known Member

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                The only problem with using them as daytime running lights, is the HALO is red/amber.

                IMG_4854.JPG IMG_4855.JPG
                 
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                • famous bob

                  famous bob mopar misfit

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                  • roccodart440

                    roccodart440 Well-Known Member

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                    • prorac1

                      prorac1 Well-Known Member

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                      That's the main reason I'm wiring them into the parking lights. That way they turn off when the headlights are on,. If he's cruising around during the day with the parking lights on, I don't think they will bother him too much.
                       
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                      • crackedback

                        crackedback FABO Gold Member FABO Gold Member

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                        You could do what you want using relays.
                         
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                        • diymirage

                          diymirage HP@idle > hondaHP@redline

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                          Get with @TrailBeast And ask him to sell you the diodes he sold me for my brake lights
                          Different scenario, but same principle
                          These things worm as a one way gate in the wiring, allowing you to send power from 2 different sources to the same light without backfeed
                          He send me one so my brake lights come on when I engage my linelock (but my linelock does not come on when the brake lights do)
                          The second one he send me, I installed in the plow truck
                          I wired some work lights into the backup lights so I could see where I'm going in reverse
                          I then added a switch on the dash so I can have them on when I want...the diode keeps the back up lights off when the worklights are on through the switch
                           
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                          • 67Dart273

                            67Dart273 Well-Known Member

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                            I don't think you can do this with just diodes, as the parking light circuit is just "one" not left/ right

                            As I understand this, you want the halo's on with parking lights, but blink with turn signals? Here is one way

                            Separate the halo to left and right circuits, and get two relays

                            Wire the contacts from fused power and the output of the conacts of each relay to each halo, so they are powered one halo from each relay

                            Make CERTAIN you check the relay coils that there IS NO DIODE internally

                            Tie one end of both relay coils together. Wire that one point to the park lamp circuit. If you want the halo lamps on with headlamps wire it to the TAIL lamp connection instead

                            Now take the remaining end of the coil wires and wire the left to the left turn, and the right to the right turn

                            HERE IS HOW this works

                            With the park lamps off, and the turn signals actuated, the relays trigger as if the park lamps are a ground. In other words the park lamps themselves complete the ground circuit of the relays as the signal circuit activates the other end of the coil...........the halo flashes

                            With the park lamps on, the halos light because NOW the relay coil circuit gets it's ground return through the ununsed flasher filament, the opposite of above
                            When you use the turn signal the halo will once again flash, but will be ON when the flasher bulb is OFF. This is the way some side markers work that flash. When the park circuit is active, and the turn circuit is active, the relay coil has 12V at both ends and does not activate. So with the park lamp on, and the flasher bulb on, the halo is dark. When the flasher bulb turns off but the park is still on , the relay coil sees ground through the flasher filament(s)
                             
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                            • diymirage

                              diymirage HP@idle > hondaHP@redline

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                              What if he simply runs one wire (with diode) from the left parking light to the left halo
                              Then run one wire (also with diode) from the left turn signal to the same input wire on the halo
                              Do the same for the right and done

                              I could be wrong of course, but why wouldn't this work?
                               
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                              • 67Dart273

                                67Dart273 Well-Known Member

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                                What about the parkiing light circuit? If the halos are hooked up to the park circuit, they are essentially wired together, no separation. If you isolate them with two more diodes, (4 altogether) then powering up the park circuit will negate the turn signal "feature" (I think)
                                 
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                                • diymirage

                                  diymirage HP@idle > hondaHP@redline

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                                  Excelent point
                                  Unless he puts the parking lights on a separate circuit (simple switch and power) you are right
                                  It could still be wired in the way I said, but then he needs to add a normally closed relay that will turn them off when the turn signals are turned on

                                  BUT would be run with the parking lights on?
                                  Post 1 makes it sound like when the headlights are on, the parking light circuit is off, which makes your last post kind of a moot point...i think
                                   
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                                  • prorac1

                                    prorac1 Well-Known Member

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                                    Every early A body I've ever owned has the headlight switch set up this way. It's a little strange. But I've always liked it. I believe it's internal in the switch.

                                    When you turn the headlights on, the front parking lights turn off. I'm not sure why they did it this way.
                                     
                                  • prorac1

                                    prorac1 Well-Known Member

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                                    I love the idea of this.

                                    I'm already wiring two relays under the battery tray for the low/high beam headlights. So what's two more. Lol.

                                    I just need to take the time to read through your post and wrap my head around it.

                                    I have a decent "basic" understanding of wiring relays. But more complicated stuff like your talking about takes me a few read through to fully comprehend. Lol

                                    Thank you. Eric
                                     
                                  • diymirage

                                    diymirage HP@idle > hondaHP@redline

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                                    either way, let us know how this work out
                                    it sounds like a great idea
                                     
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                                    • prorac1

                                      prorac1 Well-Known Member

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                                      And I think the other problem we run into is using red HALOS as front turn signals might be a no-no
                                       
                                    • prorac1

                                      prorac1 Well-Known Member

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                                      This idea is so damn cool, that I have to try it. LOL this is bad ass. LOL

                                      So in order for my simple mind to figure this out, I'm going to break it down by the numbers. And by numbers I mean the numbers on a relay.

                                      So here it goes.

                                      30 - Constant power source from circuit breaker. Could I possibly use the same circuit breaker that I'm powering the headlight relay as well?

                                      87 - HALO Hot wires. Left and right. One relay for left one relay for right. Got it.

                                      85 - ground. Wire both 85 sockets together and then tap into the parking light wire, to use the parking light circuit as ground.

                                      86 - trigger\activation wire. Tap the left relay into the left turn signal and the right relay into the right turn signal.

                                      85 and 86 switch back and forth over which one is ground and which one is trigger. Based on which has power at the time. And the other one defaults to being ground.

                                      Does this sound about right.
                                       
                                      Last edited: Nov 30, 2018
                                    • prorac1

                                      prorac1 Well-Known Member

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                                      This is just too cool. I have to try it now. LOL. I'll let you know what I end up coming up with, or if I just say fuck it and give up. LOL