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You can disable the DRLs if you want.

Going off (possibly faulty) memory here, so check carefully before you do it.

Locate the fuse box under the hood, open it. In the corner that is closest to you and the center of the vehicle (lower-left, if you will), there is a jumper. It looks a lot like a fuse, but it's a different color. There are a few other fuses along the front edge, and a few relays in the rest of that location. The one you are looking for should be labeled "SHORT PIN". Pull it, you will no longer have DRLs.

My '05 did not come to me with DRLs enabled. By searching this forum many years ago, I found that adding DRLs was as simple as adding that short pin. You can also use any normal fuse, as it only completes a ground path for a relay.

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Discussion Starter · #5 ·
thank you for the info. I will disable it if causes future problems.


You can disable the DRLs if you want.

Going off (possibly faulty) memory here, so check carefully before you do it.

Locate the fuse box under the hood, open it. In the corner that is closest to you and the center of the vehicle (lower-left, if you will), there is a jumper. It looks a lot like a fuse, but it's a different color. There are a few other fuses along the front edge, and a few relays in the rest of that location. The one you are looking for should be labeled "SHORT PIN". Pull it, you will no longer have DRLs.

My '05 did not come to me with DRLs enabled. By searching this forum many years ago, I found that adding DRLs was as simple as adding that short pin. You can also use any normal fuse, as it only completes a ground path for a relay.

.
 

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high beams works fine. It just flashes when I turn off the headlights(regular DRL kicks in) because there isnt enough juice going to the led driver.
Thanks. I meant does flashing the brights quickly work as expected or does it take more than a second for the brights to illuminate at full intensity? I had cheap H4 style LEDs years ago a quick tug on the stalk wasn’t enough for a meaningful flash of the brights. High beams worked otherwise.

Sixto
‘04 LE FWD 195K miles
 

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Discussion Starter · #7 ·
When I flash hi beams, Both hi and low beams flashes. I hope that’s how it was designed to work. On Hondas/acuras only hi beam flashes.


Thanks. I meant does flashing the brights quickly work as expected or does it take more than a second for the brights to illuminate at full intensity? I had cheap H4 style LEDs years ago a quick tug on the stalk wasn’t enough for a meaningful flash of the brights. High beams worked otherwise.

Sixto
‘04 LE FWD 195K miles
 

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2008 Sienna XLE-
For my high beam/DRL, I'm using the IJDMTOY adapter - the R1, with the 9005 bulb from Cougar Mountain. I have correct DRL and high beam functions. The DRL is less bright than the high beam so no DRL blinding of oncoming traffic. I tried several 9005 bulbs and this is the one that worked in my van.


The low beams are HID. I put them in a long time ago and did not want to change to LED since I'd have to re-aim. The current HID is aimed well so I can see and don't bother oncoming traffic.

This works well for me. Your success could vary, of course.
 

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2008 Toyota Sienna XLE awd
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on my 2008 I would like to run a lightbar off the high beam wire to a relay to the bar ,which wire do I get to splice into? I have a small lightbar on my 4x4 and it makes a world of difference
 

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on my 2008 I would like to run a lightbar off the high beam wire to a relay to the bar ,which wire do I get to splice into? I have a small lightbar on my 4x4 and it makes a world of difference

Be aware that the DRL circuit is live regardless of whether the fusebox jumper is installed or not, and it will trigger the lightbar if installed on the 12V side of the high beam.
 

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Is DRL power to the high beams low voltage or PWM? I’m guessing low voltage. It might be a matter of finding a relay that won’t turn on the light bar with anything less than a full high beam signal. Otherwise tap the high beam signal from the headlight switch and hope it’s not some funky 5V CAN deal.

Sixto
‘04 LE FWD 293K miles
 

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12 volt side of the high beam ? Did you mean negative or positive side? The DOT up here says I must have the lightbar below my headlights and triggered only with high beams . So I have the wiring and the relay and just do not know where to plug it into the high beam circuit. Videos online were less than helpfull with comentary and hands in the way of filming where the wires were going?
 

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12 volt side of the high beam ? Did you mean negative or positive side? The DOT up here says I must have the lightbar below my headlights and triggered only with high beams . So I have the wiring and the relay and just do not know where to plug it into the high beam circuit. Videos online were less than helpfull with comentary and hands in the way of filming where the wires were going?
Toyota's version of DRL in your vehicle uses 12-volt power. There are several relays involved to accomplish this function.

DRL lighting is done with the standard high-beam bulbs, but run as half-power. This is done by feeding ONE light with 12 volts. A relay interrupts the ground of that bulb and sends the power to feed the second light. That light is then grounded in the normal way. Doing this, each bulb uses half of the voltage available, giving the lower light level for DRLs.

When high beams are requested, the relays are set so both lights get full voltage and full ground, with no sharing between them.

The relays that did this in my '05 (US-spec) were in the fuse box behind the left headlight. It would take a few minutes of probing with a test light or voltmeter to see which terminal on which relay would be the best to use.

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So what you are saying is that I can not run a wire to a relay from the high beam wire to the headlight.? I will have to have someone who understands auto electronics to find the appropriate spot to plug in the wire.
 

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It depends on the voltage threshold of your relay. In my ‘04, the driver side high beam gets 12V through the red with blue stripe wire for DRL or high beam. The passenger side high beam gets 12V through the red with yellow stripe wire for high beam and some voltage I can’t measure for DRL (I don’t want to mess with connector or cut into the wire). If your wiring is like mine, tap the signal for your light bar relay from the passenger side red with yellow stripe wire. Ideally there won’t be enough voltage in DRL mode to activate the relay. I’ll hold your beer :)

Sixto
‘04 LE FWD 203K miles
 

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Use a voltmeter on the high beams when the van is running, with the headlights off and DRLs engaged (parking brake off). One side of the driver's headlight bulb will have 12V; the other side will be lower, like 6 or 7 volts, due to the load of the headlight itself. The DRL circuit itself is grounded through the giant resistor near the brake reservoir.

My light bar is connected to the high beam circuit through the driver side headlight, using one of the 9005 harness adapters sold by Slee Offroad (popular Land Cruiser shop - linked above). Highly reputable company. The light bar harness gets its signal from the 12V side. It's plenty to trigger my light bar relay when I switch it on.

Here's a diagram of the DRL circuit: Toyota Sienna Service Manual: DRL Relay Circuit - Diagnostic trouble code chart - Lighting system - Lighting
 

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So what you are saying is that I can not run a wire to a relay from the high beam wire to the headlight.?
I am just not coming back to check this thread, but see that you have some good suggestions. What I was hinting at in post #13 was that when the DRLs are ON, one high beam will be fed by 12 volts (actually voltage while engine is running is closer to 14), and the other high beam will be fed by half that voltage. As long as you connect your wire to the side with the higher voltage, you should be fine.

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?? Won’t the light bar be on all the time then?

Sixto
‘04 LE FWD 203K miles
If you have it connected to the high beam circuit, then you must have a switch on the relay, otherwise yes, the light bar will be on as long as the low beam circuit is turned off. The DRL circuit only turns off when the low beams come on.
 

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I will inquire of my mechanic to find the right spot to run a wire from as at the moment I have an LED lightbar setup on my 4x4 to a switch , on the arm rest , not to the high beam switch. So I can turn it on /off by hand but not from the steering column where it would far more convenient and according to the motor vehicle branch here , legal!
 
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