LED headlight conversion
06-29-2015, 10:30 AM
#1
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LED headlight conversion
New to site... Searched n couldn't find any post relating to my issue
Removed the h6054 halogen sealed beam . Which worked 100%
Picked up pair of 45wat LED headlights...
Suposto b plug n play. Low beams work.
When I want high beams to come on... The low beam
Bulbs go to very dim and that's it.
I tried messin round with the 3 pin connector.
Ground is center.
Any help?
This is what lights suposto do
Last edited by Scotttekoch; 06-29-2015 at 10:37 AM. Reason: Add pic
06-29-2015, 03:56 PM
#2
The site search isn't that great 
, google usually gets better results for me.
This may help https://www.yotatech.com/forums/f116...pickup-289394/
, google usually gets better results for me.This may help https://www.yotatech.com/forums/f116...pickup-289394/
Last edited by Odin; 06-29-2015 at 04:05 PM.
06-29-2015, 11:24 PM
#3
Perhaps it is just corrosion on the headlight plugs.
It could also be a poor fit on the light socket plug.
You did check your new lights worked before installing them??
They could be bad out of the box.
Also remember our headlights are a switched ground .
Corrosion on the headlight switch contacts or wear might be a issue now that the current draw is much lower.
Just some ideas to think about
It could also be a poor fit on the light socket plug.
You did check your new lights worked before installing them??
They could be bad out of the box.
Also remember our headlights are a switched ground .
Corrosion on the headlight switch contacts or wear might be a issue now that the current draw is much lower.
Just some ideas to think about
07-01-2015, 06:20 PM
#4
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Thanks for the link. Answered lots of questions..
checked on different truck.. Not Toyota... Headlights worked proper. Bench tested lights. Worked..
Had combo switch off n opened. No corrosion. Still looked new
Built my self a harness for headlights. Pretty much 100% followed instructions on link
Low beams work fine...
But that switched ground for hi beams...
I can't figure that out
How do I get a power signal??
checked on different truck.. Not Toyota... Headlights worked proper. Bench tested lights. Worked..
Had combo switch off n opened. No corrosion. Still looked new
Built my self a harness for headlights. Pretty much 100% followed instructions on link
Low beams work fine...
But that switched ground for hi beams...
I can't figure that out
How do I get a power signal??
Last edited by rworegon; 07-07-2015 at 03:29 AM.
07-01-2015, 09:02 PM
#5
See schematic below.
With switched ground, as soon as you turn headlight switch on, headlight relay turns on and provides +12V to "common" pin 3 of headlight bulb.
Switched-ground means you control which pin of the bulb is connected to ground, while the common (pin3) has steady +12V.
From schematic:
When stalk dimmer is in LOW position contacts 13 and 6 are connected, so Low beam filament is connected to ground through pin 1 (low filament).
When stalk dimmer is on high beam, pins 5 and 13 are now connected (see red trace on schematic), connecting 2 of bulb (high filament) to ground.
With switched ground, as soon as you turn headlight switch on, headlight relay turns on and provides +12V to "common" pin 3 of headlight bulb.
Switched-ground means you control which pin of the bulb is connected to ground, while the common (pin3) has steady +12V.
From schematic:
When stalk dimmer is in LOW position contacts 13 and 6 are connected, so Low beam filament is connected to ground through pin 1 (low filament).
When stalk dimmer is on high beam, pins 5 and 13 are now connected (see red trace on schematic), connecting 2 of bulb (high filament) to ground.
07-01-2015, 10:02 PM
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Sorry. I worded that wrong...
But thanks for the explanation. ... I printing they out n saving it. Kinda clears things up.. Or confused me more..
How do I get a power signal??
How the hell do I get it to b a normal system.?!?!?!
What wires do I have to change??
But thanks for the explanation. ... I printing they out n saving it. Kinda clears things up.. Or confused me more..
How do I get a power signal??
How the hell do I get it to b a normal system.?!?!?!
What wires do I have to change??
07-01-2015, 10:28 PM
#7
LOL!
Simplest way to convert to switched positive is to buy the H4 conversion harness.
HOWEVER, you need to make sure that your LED lights' polarity is such that:
Common pin (pin3) is designed to be the ground side,
Pins 1 & 2 are designed to be positive side.
If you can post schematic/instructions for your LED light, we can help.
How do I get a power signal?? How the hell do I get it to b a normal system.?!?!?! What wires do I have to change??
HOWEVER, you need to make sure that your LED lights' polarity is such that:
Common pin (pin3) is designed to be the ground side,
Pins 1 & 2 are designed to be positive side.
If you can post schematic/instructions for your LED light, we can help.
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Lifetime Toyota (04-08-2023)
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07-02-2015, 09:40 AM
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07-02-2015, 09:41 AM
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07-05-2015, 11:27 AM
#12
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Would this work.....
I take the existing combi switch. Re locate it to somewhere under dash. And leave it connected.
Get another combi switch n wire it in so that I can get a power signal for the high beam relay
I take the existing combi switch. Re locate it to somewhere under dash. And leave it connected.
Get another combi switch n wire it in so that I can get a power signal for the high beam relay
07-05-2015, 02:52 PM
#13
It's not that simple. I'm electrically-savvy but I wud not even do that. Messy. Spend $34 on H4 conversion harness, and keep it simple and robust.
07-05-2015, 10:45 PM
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34$!!!!!!
I wish. I click on that link n it tells me 229$$$$
For that price. I'll figure this stuff out n make it work.
I'll let y'all's know what I do
I wish. I click on that link n it tells me 229$$$$
For that price. I'll figure this stuff out n make it work.
I'll let y'all's know what I do
Last edited by dropzone; 07-06-2015 at 09:35 PM.
07-06-2015, 05:12 PM
#15
http://www.the12volt.com/relays/page1.asp
http://www.ebay.com/itm/OEM-H4-Headl...-/311394232192
http://www.ebay.com/itm/CERAMIC-H4-H...-/331273872364
http://www.ebay.com/itm/OEM-H4-Headl...-/311394232192
http://www.ebay.com/itm/CERAMIC-H4-H...-/331273872364
Last edited by Robert m; 07-06-2015 at 05:18 PM.
10-30-2021, 08:56 AM
#19
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I read this thread, watched videos and still can’t figure out what is going on with my head lights. I’m not electrical savy so I initially bought the harness which does not work I get highway beam only.
I went and bought a relay and did the wiring myself now I only have low beams
if I throw an amp meter to it I get 12+ bolts to the low beam but only 1ish bolts to the high beam. I’m 3 hours in trying to figure this out
anyone have any ideas ?
thanks !
I went and bought a relay and did the wiring myself now I only have low beams
if I throw an amp meter to it I get 12+ bolts to the low beam but only 1ish bolts to the high beam. I’m 3 hours in trying to figure this out
anyone have any ideas ?
thanks !
10-30-2021, 11:35 AM
#20
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1) You threw a VOLTMETER, or at worst, a multimeter to it.
2) You measured +12 VOLTS DC, not bolts.
Does the relay have 2 outputs, one for low beams, one for high, if it goes direct to the bulb? Or does it feed the switch on the steering column? If so, the switch may be bad.
Check that the three wires to the bulbs are correct. One ground, two possible hot leads. Make sure they go to the right pins. IE Ground on the connector goes to the ground on the bulb, and so forth.
I know, I'm a picky SOB, but I worked electronics my entire career.
I do wish you good luck! Electronics is very hard to troubleshoot from a distance, you know?
Pat☺
2) You measured +12 VOLTS DC, not bolts.
Does the relay have 2 outputs, one for low beams, one for high, if it goes direct to the bulb? Or does it feed the switch on the steering column? If so, the switch may be bad.
Check that the three wires to the bulbs are correct. One ground, two possible hot leads. Make sure they go to the right pins. IE Ground on the connector goes to the ground on the bulb, and so forth.
I know, I'm a picky SOB, but I worked electronics my entire career.
I do wish you good luck! Electronics is very hard to troubleshoot from a distance, you know?
Pat☺
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