Headlight kit Question
Question:
Daniel, A generic relay is just a switch. A coil in the relay flips the switch, electromagnetically. Hook a hot wire to one side of the relay coil. Hook the "ground" line from your headlight switch to the other side of the coil. Then, when the coil is grounded by you setting the headlight switch ON, it "fires" the relay. That causes the "normally open" contacts (poles) to connect, just like any switch does. Now the relay can connect your headlights to ground through those "active" contacts, just as your headlight switch did. Hook one side of the active contacts to ground. Hook the other side to the *headlights* ground wire (that once went to the headlight switch). Now your headlight switch grounds the relay coil, not the headlights. The headlights will be fed ground by the relay contacts, when the coil fires, and "switches" the relay ON. Use one relay for high beams, and another one for low beams. Just wire up the relay coils as if they were your headlights, and let the relay contacts turn on your lights. The huge advantage here is that a relay coil draws *much* less power than headlights do, so your headlight switch will probably outlast the truck now. The heavy current needed for the headlights only goes through the active relay contacts. A relay is *much* cheaper than a new headlight switch; if it ever does go bad, you can easily change it yourself. The headlight relay for any car or truck that uses headlight relays, stock, is going to be fine. Any 12 Vdc "holding relay" would do it for you, though. Whatever you choose, make sure that you record the Part Number and manufacturer’s address in your vehicle records. It is a common electrical practice to control huge current flows, using only a cheap little switch, by using the cheap switch to control a relay that can handle the huge current loads. Cheers, Red Replies will bounce, unless you remove the letter A from my email address. – Hide quoted text — Show quoted text – > I am also trying to get the 4 beam setup running, There is a big problem in > my eyes because GM uses ground switching for the headlights… > if you turn on the low beams and measure the voltage, both low and hi beams > have 12vdc supplied, but only the low beams have a true ground, the hi beams > ground wire is floating…. and that switches when the hi beams come on….. > I was planning on using a relay….. now what do I use!!!! > Let me know if you get yours working…… > I will update if I find a solution….. > Daniel > I have a 2001 Tahoe and my question is this. I am thinking of buying a > High > 4 Quad Beam Kit for my suv so I can run Hi and Low beams at the same time. > the instructions are vague they tell you to find the wiring harness for > the > headlights and harness should be located near driver side fender. I don’t > want to cut anything but I can’t find it…obviously it is there some > where. > I’m also confused as to if I will need 2 kits or if 1 will be enough for > the > whole system. Would appreciate any info about this from any1 who may be > familiar with this kit. > Thanks in Advance, > D
Response:
Sorry guys – my scanner sucks. This is as simple as it gets. The page has pictures on it too. HTH . R&D Truck & Auto Accessories, Inc. Instructions for installing Head Light Controller into 99-UP Chevrolet and GMC pickups and full size sport new style sport utility vehicles (Tahoes, Suburbans, Yukon, Yukon XL). NOT FOR HEAVYDUTY& and DIESEL MODELS! 1. Disconnect battery before doing any electrical work on vehicle. 2. Open hood and locate the Electrical Center box (fuse box). This is the large black plastic box on the drivers side. Take the cover off, it will lift right off. 3. Remove the 4 bolts for the fender to firewall brace. These bolts are 13 mm. Two of the bolts are under the hood weather stripping~ Remove the windshield washer hose from the brace. Fig 1. 4. Remove the Electrical Center box, there are two catches on the engine side down low. Release these catches and the box will slide right up and off. 5. - There is one catch on the fuse box part of the Electrical Center1 it is on the fender side up high. Release this and the fuse box will now tilt up, it is hinged on the engine side. It is helpful to use a screwdriver to hold this up while you make the connections. Brace the screwdriver against the inside of the fender with the blade towards the fuse box so as not to scratch anything’ 6. Locate the square green connector on the underside of the fuse box. Connect the purple wire from the Headlight Controller to either of the purple wires in the 3rd row, 5th’ column of the square green connector. It may be necessary to clip the wire ties holding the wires together. There is another pair of purple wires on this connector do not connect to these or the Headlight Controller will not work properly. 7. Connect the yellow wire from the Headlight Controller to either of the yellow wires in the 4th row, 5th column of the green connector. Connect the orange wire from the Headlight Controller to either of the orange wires in the 6th row, 5th column of the green connector. 8. Connect the black wire from the Headlight Controller to the black wire in the 6th row, 6th column of the red connector which is right below the green connector. 9. Reconnect battery and test system. With the headlights on, turn on the brights, all four of the headlights should be on. With the headlight on dim only the outside lights should be on. If the headlights do not work this way check the connections to make sure they are on the right wire and are making contact. If one side or the other fail to light check the fuses. . .
– Hide quoted text — Show quoted text -> Here’s where I bought mine. Easiest thing in the world to do. Easy to > follow instructions. I also bought the headlight over ride, the foglight > controller and the electric lock device. To get all four headlights on > hi-beam, you have to open the power center on the left fender. The > connections are underneath it, but its real simple. > . > http://www.truckautoaccessories.com/acb/index.cfm?ncp=yes&DID=9 > . > I am also trying to get the 4 beam setup running, There is a big problem > in > my eyes because GM uses ground switching for the headlights… > if you turn on the low beams and measure the voltage, both low and hi > beams > have 12vdc supplied, but only the low beams have a true ground, the hi > beams > ground wire is floating…. and that switches when the hi beams come > on….. > I was planning on using a relay….. now what do I use!!!! > Let me know if you get yours working…… > I will update if I find a solution….. > Daniel > > I have a 2001 Tahoe and my question is this. I am thinking of buying a > High > > 4 Quad Beam Kit for my suv so I can run Hi and Low beams at the same > time. > > the instructions are vague they tell you to find the wiring harness for > the > > headlights and harness should be located near driver side fender. I > don’t > > want to cut anything but I can’t find it…obviously it is there some > where. > > I’m also confused as to if I will need 2 kits or if 1 will be enough for > the > > whole system. Would appreciate any info about this from any1 who may be > > familiar with this kit. > > Thanks in Advance, > > D
Response:
Here’s where I bought mine. Easiest thing in the world to do. Easy to follow instructions. I also bought the headlight over ride, the foglight controller and the electric lock device. To get all four headlights on hi-beam, you have to open the power center on the left fender. The connections are underneath it, but its real simple. . http://www.truckautoaccessories.com/acb/index.cfm?ncp=yes&DID=9 .
– Hide quoted text — Show quoted text -> I am also trying to get the 4 beam setup running, There is a big problem in > my eyes because GM uses ground switching for the headlights… > if you turn on the low beams and measure the voltage, both low and hi beams > have 12vdc supplied, but only the low beams have a true ground, the hi beams > ground wire is floating…. and that switches when the hi beams come on….. > I was planning on using a relay….. now what do I use!!!! > Let me know if you get yours working…… > I will update if I find a solution….. > Daniel > I have a 2001 Tahoe and my question is this. I am thinking of buying a > High > 4 Quad Beam Kit for my suv so I can run Hi and Low beams at the same time. > the instructions are vague they tell you to find the wiring harness for > the > headlights and harness should be located near driver side fender. I don’t > want to cut anything but I can’t find it…obviously it is there some > where. > I’m also confused as to if I will need 2 kits or if 1 will be enough for > the > whole system. Would appreciate any info about this from any1 who may be > familiar with this kit. > Thanks in Advance, > D
Response:
I am also trying to get the 4 beam setup running, There is a big problem in my eyes because GM uses ground switching for the headlights… if you turn on the low beams and measure the voltage, both low and hi beams have 12vdc supplied, but only the low beams have a true ground, the hi beams ground wire is floating…. and that switches when the hi beams come on….. I was planning on using a relay….. now what do I use!!!! Let me know if you get yours working…… I will update if I find a solution….. Daniel
– Hide quoted text — Show quoted text -> I have a 2001 Tahoe and my question is this. I am thinking of buying a High > 4 Quad Beam Kit for my suv so I can run Hi and Low beams at the same time. > the instructions are vague they tell you to find the wiring harness for the > headlights and harness should be located near driver side fender. I don’t > want to cut anything but I can’t find it…obviously it is there some where. > I’m also confused as to if I will need 2 kits or if 1 will be enough for the > whole system. Would appreciate any info about this from any1 who may be > familiar with this kit. > Thanks in Advance, > D
Response:
I have a 2001 Tahoe and my question is this. I am thinking of buying a High 4 Quad Beam Kit for my suv so I can run Hi and Low beams at the same time. the instructions are vague they tell you to find the wiring harness for the headlights and harness should be located near driver side fender. I don’t want to cut anything but I can’t find it…obviously it is there some where. I’m also confused as to if I will need 2 kits or if 1 will be enough for the whole system. Would appreciate any info about this from any1 who may be familiar with this kit. Thanks in Advance, D
