best bulbs for lr90

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Hi folks, the wiring diagram below, is for a generic headlight wiring loom up grade and will work for both positive and negative switched headlight systems.

If the new loom is made to the diagram’s set up and connections made to the vehicle’s existing headlight sockets, then there will be no need to cut into or alter the vehicle’s wiring in any way.

Once the new loom is installed, the vehicles headlight globes will now be positive switch no matter what polarity the vehicle’s headlight switch work by.

The reason for using 4 single pole relays instead of 2 double poled headlight relay is to increase safety. If standard double poled headlight relays are used and a fuse blows or a relay fails, you can loose either both low beam or both high beam at the same time.
By using 4 single pole relays, if a fuse blows, you will only loose 1 high beam AND 1 low beam, or if a relay fails you will only loose either 1 high beam OR 1 low beam.
This is a much safer way to operate the headlights.

The 4mm2 Automative wire is way above what is needed but by using the heavier cable, and by running an earth wire from the headlight globe all the way to the battery, the standard headlights should be brighter and slightly whiter. By about 150% only.

With this set up, the relays are protected by the vehicle’s existing headlight fuse but the current that is required to operate the headlights via the vehicle’s headlight switch is now about 1/50th of what was needed before the new loom was installed and this should considerably extend the operating life of the vehicles headlight switch.

Once all the wiring is in place and the lights have been tested, all the new cable should be protected by housing it in split tube and securing the tube by way of wire tires.

Picture of diagram to follow. I just need to find out how to attach it to this mail. It keeps asking for http/?.......
 
Thanks for that. I read somewhere about people putting bmw lights in ???

Don supposed anybody knows if they should be sealed beam or bulbs in a lr90 march 1985 2.25DNA its van type.
 
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