There are several ways to do it. I have read this on another forum that I belong to. I forget what year your Burb is though so it might be different.
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It's easy -- go for it
I'm a newbie here, and this is my first post here, so please be gentile...
I'm a grandfather and don't see as well at night as I used to. So, when I upgraded to brighter (but legal) bulbs on the old 'Burb, I converted to "quad-high" as well. Late at night, on a deserted highway, it makes a quantum difference.
What I did:
With the new bulbs it seemed prudent to provide additional power for the quad set-up. Selecting the appropriate Bosch-type relay will provide everything you need to accomplish the desired switching. There are kits available, but they might not be exactly what you want. Add a wire, a fuse, and some connectors and you have all that's necessary.
1. Determine a good position for your relay -- closer to the headlights than the firewall and along the existing harness.
2. Select a power source and run a new, fused, wire to the relay area. Fish the headlight wires from the OEM convoluted cover.
Note: You have two mounting options with a Bosch relay: you can get a socket with pigtails, and plug the relay into the socket. Or, just get some female spade lugs, crimp and go. The socket also provides a mechanical anchor for the relay. The second method saves you from having to splice the socket's pig tails, but you'll have to anchor the relay directly (it has a screw hole). But, make sure there is enough slack in the existing wires if you're going with the pig-tailless method.
3. Connect to the relay as shown in the diagram. As you can see, this is a simple application of a SPDT relay. Here's what's happening: At low beam, the power passes thru the relay at it's "rest" position. When you switch to high beam, the high beam power is OEM except it's tapped to activate the relay. This provides the alternate power for the low beams without a cross-connection = quad light. With this set up, even if the relay fails or is removed, you'll still have light.
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I'm a newbie here, and this is my first post here, so please be gentile...
I'm a grandfather and don't see as well at night as I used to. So, when I upgraded to brighter (but legal) bulbs on the old 'Burb, I converted to "quad-high" as well. Late at night, on a deserted highway, it makes a quantum difference.
What I did:
With the new bulbs it seemed prudent to provide additional power for the quad set-up. Selecting the appropriate Bosch-type relay will provide everything you need to accomplish the desired switching. There are kits available, but they might not be exactly what you want. Add a wire, a fuse, and some connectors and you have all that's necessary.
1. Determine a good position for your relay -- closer to the headlights than the firewall and along the existing harness.
2. Select a power source and run a new, fused, wire to the relay area. Fish the headlight wires from the OEM convoluted cover.
Note: You have two mounting options with a Bosch relay: you can get a socket with pigtails, and plug the relay into the socket. Or, just get some female spade lugs, crimp and go. The socket also provides a mechanical anchor for the relay. The second method saves you from having to splice the socket's pig tails, but you'll have to anchor the relay directly (it has a screw hole). But, make sure there is enough slack in the existing wires if you're going with the pig-tailless method.
3. Connect to the relay as shown in the diagram. As you can see, this is a simple application of a SPDT relay. Here's what's happening: At low beam, the power passes thru the relay at it's "rest" position. When you switch to high beam, the high beam power is OEM except it's tapped to activate the relay. This provides the alternate power for the low beams without a cross-connection = quad light. With this set up, even if the relay fails or is removed, you'll still have light.
GP Thunder, Super-White 9006 55W & 9005 65W by Global Premier. They claim to be 7500K w/ quartz glass. The OEM's were 51W and 60W Sylvanias. I've run the new quads for several hours, and the lamp lenses don't get overly warm.
I just checked eBay, and they are now available for about half what I paid. :grrrrrr:
No problem
I wasn't sure enough that I didn't have to double check...
First, let me clarify: I should have indicated that my diagram shows the low beam condition. When the relay coil is NOT energized, the flow is between 30 & 87a. This is the normal low beam situation.
When switched to high beam, the OEM high beam power, from the column switch, is tapped to trip the relay and still power the high beams. This is the condition when 30 is connected to 87, and the low beams are powered by the supplemental supply.
As I prefaced my response, I really couldn't remember which was which, 87 or 87a. Here's what I found (from several sources) to remind me what's going on...
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Luckily, my original is correct. Typically, Bosch depicts relays as though the coil repels the connection at 87 -- your confusion is understandable.
Give the quad lights a try. If you're like me, when done, you're going to say: Duhh... That was so easy, why didn't I do it a long time ago?
FYI, A lot of time and effort went into this animated relay info site, check out: http://www.bcae1.com/relays.htm
Good luck, zippy
Tim,
I wasn't sure enough that I didn't have to double check...
First, let me clarify: I should have indicated that my diagram shows the low beam condition. When the relay coil is NOT energized, the flow is between 30 & 87a. This is the normal low beam situation.
When switched to high beam, the OEM high beam power, from the column switch, is tapped to trip the relay and still power the high beams. This is the condition when 30 is connected to 87, and the low beams are powered by the supplemental supply.
As I prefaced my response, I really couldn't remember which was which, 87 or 87a. Here's what I found (from several sources) to remind me what's going on...
Luckily, my original is correct. Typically, Bosch depicts relays as though the coil repels the connection at 87 -- your confusion is understandable.
Give the quad lights a try. If you're like me, when done, you're going to say: Duhh... That was so easy, why didn't I do it a long time ago?
FYI, A lot of time and effort went into this animated relay info site, check out: http://www.bcae1.com/relays.htm
Good luck, zippy
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