Toyota Hiace headlights

[telectrix]

just received a pair of H4 COB LED lamps. work fine on main beam but not on dip. investigation shows that although the polarity is correct for main beam ( + to the right as you look at the plug, - to left ), when selecting dip, the polarity reverses so that I get + on the left pin and - on the top (dip) pin. obviously, this is OK for a filament lamp, but not for LED. any ideas anyone?

 

[Midwest]

Flipping heck Tel, led strip lights in the back, led headlamps, really pimping your ride.

 

[Geordie Spark]

Flipping heck Tel, led strip lights in the back, led headlamps, really pimping your ride.

The next step?? Tuck-and-roll automotive upholstery - Upholstery Journal

 

[davesparks]

And I thought it was only Landrover that got up to this sort of electrical nonsense!

I think you could get over it with a relay behind each headlamp to switch the polarity on dip beam then switch it back on main.

 

[Midwest]

And I thought it was only Landrover that got up to this sort of electrical nonsense!

I think you could get over it with a relay behind each headlamp to switch the polarity on dip beam then switch it back on main.

Or just put the old ones back in

 

[Midwest]

Tel, this vid compares the different lamps for vehicles; https://www.youtube.com/watch?v=hRqxTl4rxlg
She does go on a bit!

OMG Boxing Days, used to be so much more exciting than this, more tea vicar. :54:

 

[Geordie Spark]

​

 

[Midwest]

Or....you could ask this young lady to help; https://www.youtube.com/watch?v=WH53bVzrMjo

 

[shanky887614]

landrover lol the forum im on they so way more than that im one of 5 that still have the stock engine XD

 

[Deleted member 26818]

Manufacturing fault, send them back.

 

[Deleted member 26818]

Or....you could ask this young lady to help; https://www.youtube.com/watch?v=WH53bVzrMjo

Don't trust them, they call the lamps, bulbs.

 

[telectrix]

from what i can tell, the LEDs want a common + and a switched -. the vehicle supplies a comm0n - and a switched +.

 

[Harni]

Pretty sure these won't pass an MOT anyway just like aftermarket HIDs don't*. Its probably worth just getting some good quality lamps like Phillips extreme visions

* i say don't, it depends how friendly/stupid your tester is

 

[davesparks]

Pretty sure these won't pass an MOT anyway just like aftermarket HIDs don't*. Its probably worth just getting some good quality lamps like Phillips extreme visions

* i say don't, it depends how friendly/stupid your tester is

Aftermarket HIDs can pass an not if they meet the requirements. It's a while since I did if to my mates car but I think we just had to add a washer jet to each headlamp

 

[Harni]

Aftermarket HIDs can pass an not if they meet the requirements. It's a while since I did if to my mates car but I think we just had to add a washer jet to each headlamp

They have changed the goal posts (AGAIN). basically if the headlight wasn't designed for the light pattern from HIDs, it shouldn't pass. they also have to have self levellers although how the tester can test this i don't know. There isn't a way really so all they can do is go by the book. For instance, if you've got a 1990 Fiesta, its quite clear its not suitable for HIDs so instant fail!