HIGH BEAM STAYS ON?

[lilandagi]

Everyone,

Need some help with an electrical bug that's been hard for me to figure out. When my light switch is off when the car is running the high beam stays on, only on the drivers side. When the car is on the ignition on position the lights work normally, without the car running. Anybody have any ideas? I do appreciate it, thank you.

 

[Ayune]

What year/model truck to you have?

 

[lilandagi]

What year/model truck to you have?

It's a 2001 Land Cruiser. Problem is intermittent, has been happening on and off.

 

[lilandagi]

Just an update, the problem is now constant. Suspected the headlight relay and changed it, but still has the same problem. Some background, this happened as I was in the process of converting to the round style headlights with housing from Kelly Saad. The lights are Morimoto sealed 7 2.0. I tried pulling the fuses and it goes off when the 20amp left upper headlight fuse is pulled, so the power is coming through there when the switch is off. I also tried putting the old head lamp housing back and the problem is still there. Any help would be greatly appreciated if anyone has an idea. Thank you.

 

[CloudCity]

My only guess is some insulation along that side headlight wiring broke and shorted? Try to examine as much as you can and look for any cracks where it could arc or rub marks in the insulation against metal, etc. I wonder if the connector could have an internal fault? Maybe visually inspect that the pins and tabs aren't bent inside. These are all guesses.

 

[lilandagi]

Finally broke down and took it to an auto electrical shop. Will update when I get it worked out. Thank you for the suggestions, I appreciate it!

 

[CataclysmSX]

Did you by chance ever figure out what caused this? My '99 just started having the same exact issue, driver's light high beam stays on even when the lights are turned off and truck is running.

 

[jerryb]

are you both saying that you put LEDs in your high beam? or, that in the process of switching to the round morimotos? which is a low+high together LED light combo?

There isn't a low and high beam combo light that is LED that you can put in a LC or LX with daytime running lights engaged. (there isn't any LED you can just wire up to the high beams with daytime running lights engaged that will work)

if you're manually bypassing the daytime running light portion of the relay, or at another wire in the car then it's possible to combine the 9006 and 9005 plugs. Maybe that's already addressed in the switching to the

seems those are DTRL and low and hi for each light at the connector? What are you doing with the taps for daytime running light.

you could get a few different outcomes depending on how you wire those up.
post a pic, say how you wired it.

shrt answer, one LED will work if you didn't disable the daytime running light.
If you tapped the wrong wire, or or didn't do your grounds correctly in the high beam car side 9005 connector you get different grounds while the daytime running relay switches them.
if you just started tapping behind the cars high beam connector you won't get the correct wire.
for exmple, the redwhite is the high beam ground in most lc and lx, the corresponding wires int he high beam plugs are the common ground. It's only a ground after the relay makes it so.
before that, the ground for both plugs is in the passenger side high beam connector. I believe that's red yellow, which is the ground for the daytime running lights, when the headlights are off.
That also only happens when you click the steering wheel stalk. the relay switches that also.

should be redgreen, drivers side hot. redyellow passenger side hot. Whitered gound, both sides, high beam plug.

whats the third wire in the sealed 7? the black middle one in the connector, ground? you need to know if the LEDS are polarity sensitive also.
IT's entirely possible to get those wired correctly. It's not possible the way it talks about on the sealed7 instruction page.

@CataclysmSX if you're not talking about swapping to that sealed7, and your just having a weird stock headlight thing going on. Then it's the wiring. If anyone has ever messed with your cars headlight connectors or turn signal it will be in there. OR the daytime running light relay.

 

[CataclysmSX]

are you both saying that you put LEDs in your high beam? or, that in the process of switching to the round morimotos? which is a low+high together LED light combo?

There isn't a low and high beam combo light that is LED that you can put in a LC or LX with daytime running lights engaged. (there isn't any LED you can just wire up to the high beams with daytime running lights engaged that will work)

if you're manually bypassing the daytime running light portion of the relay, or at another wire in the car then it's possible to combine the 9006 and 9005 plugs. Maybe that's already addressed in the switching to the

seems those are DTRL and low and hi for each light at the connector? What are you doing with the taps for daytime running light.

you could get a few different outcomes depending on how you wire those up.
post a pic, say how you wired it.

shrt answer, one LED will work if you didn't disable the daytime running light.
If you tapped the wrong wire, or or didn't do your grounds correctly in the high beam car side 9005 connector you get different grounds while the daytime running relay switches them.
if you just started tapping behind the cars high beam connector you won't get the correct wire.
for exmple, the redwhite is the high beam ground in most lc and lx, the corresponding wires int he high beam plugs are the common ground. It's only a ground after the relay makes it so.
before that, the ground for both plugs is in the passenger side high beam connector. I believe that's red yellow, which is the ground for the daytime running lights, when the headlights are off.
That also only happens when you click the steering wheel stalk. the relay switches that also.

should be redgreen, drivers side hot. redyellow passenger side hot. Whitered gound, both sides, high beam plug.

whats the third wire in the sealed 7? the black middle one in the connector, ground? you need to know if the LEDS are polarity sensitive also.
IT's entirely possible to get those wired correctly. It's not possible the way it talks about on the sealed7 instruction page.

@CataclysmSX if you're not talking about swapping to that sealed7, and your just having a weird stock headlight thing going on. Then it's the wiring. If anyone has ever messed with your cars headlight connectors or turn signal it will be in there. OR the daytime running light relay.

My issue was just a mistake of not fully understanding how the DRL used the high beams to operate. Indeed, only the drivers light would work with LEDs for DRL. I did the DRL bypass last night, and everything is working as expected now. Thanks for explaining everything in detail though.