LED full light assembly upgrade for 1995 Landcruiser Ute - 70 Series.

I just fitted a pair of these to the OKA. They fit in the old holder that has the adjustment mechanism and simply plug into the old wiring globe plug. A 5 minute changeover.
https://www.pro-vision-lighting.com/led-headlight-truck-5x7-inch-105-watt-drl-black-chrome
Not been out in the dark yet to try them though :)
Cheers,
Peter
OKA196 motorhome

Brian DJ

Because an LED is NOT a globe and carries current only one way through itself you cannot change the negative of the LED lamp to act as a common +ve supply. So a work around is required.
They have to be wired so the negative switched Toyota can act a a positively switched system. High beam becomes an issue too.
Yes, Toyota's do use negative to earth switching and so any LED light which has two positive feeds and one neg wire won't work unless you add two relays. Each relay has to be coil fed by the original headlight plug ie, common, connection which is the positive wire on a Toyota when the headlight switch is turned on. The two relay coils can then be earthed to negative by the OE High and Low wiring which switches the coils to earth/negative on the Toyota. The main feed to each relay, ie the heavy current section, can be fed by the same OE power wire, along with the relay coil input feeds.
That way, when you choose High or Low, the relay one or other, will feed positive power to the LED lights +ve inputs. The Negative of each LED can be direct to negative/chassis.
You may experience the High Beam light doesn't work as they normally earth the indicator lamp through the Low beam side. You may require a small globe ie, 10w across the OE headlight common =ve feed to the Lowbeam wire. This is in parallel with the Lowbeam relay coil and provides sufficient current to the High beam indicator which originally gets it;s power through the LOW BEAM filament of the OE headlight. When LOW is then selected, the relay should operate and run the LOW LED and also will run the small Globe at full strength, but NO HB IND) because the LOW beam wire is being earthed to neg to make it work as per normal, ie LOW BEAM.
The globe OR it can be a resistor across +ve feed to LOW BEAM wire, enables the HB light to turn ON and has to carry sufficient power so the relay coil effectively sees +ve both sides of the coil, ie not much voltage across it to activate, hence it does not turn ON.
Hope this all makes sense. Take it bit by bit!

I do a lot of driving these days in the Bowen basin and those LED upgrades are as annoying as f**k coming the other way.
No way they are legal.

Thanks RMD for your comprehensive reply, I am sure it will assist my friend in making the project a success.

Any more comments on the subject will also be appreciated. Brian DJ