H4 and H1 headlight conversion

[treerootCO]

Picked up a set of the Depot headlights on eBay. The wiring is an H1/H4 style bulb. I couldn't find a thread on Mud that explained how to wire these bulbs up so here it is:

Search results for Toyota depo landcruiser in Car & Truck Parts & Accessories
The lens is clear glass not plastic and build quality is not OEM by any means but well made.

Another thread on these headlights

H1 Ground and positive lead. The positive is the center lead. If you look at the plug that goes directly on the bulb you can see one leg is the outer portion and you can trace it to the terminal.

H4 pinout looking at the rear of the bulb with the middle pin on top:
Left - Gnd
Right - High Beam
Top - Low Beam

Napa part numbers:
H1 female plug = LS6480
H4 female plug = LS6479
H1 bulb 55watt = BP1255/H1
H4 bulb 55/60 watt = BP1260/H4

Female 9005/9006 plug and pins - need to find a source. Black with 2 ribs inside is high beams, grey with one rib on the inside is the low beams. I sourced these from Ben at Slee's and I need to ask him if Christo can order these.

[treerootCO]

The first thing I did was to install the Slee upgrade harness and test with the OEM headlights. In the stock configuration, US Spec, both 9005 and 9006 bulbs light when the high beams are selected. The H1 (high beam) has one filament. The H4 has two filaments. E code adds the 2nd high circuit to the low beams. To make things simple, I just wired up the low beam filament of the H4 along with the ground. I was tempted to run both filaments or wire in the high circuit for low beams but I changed my mind. I don't know the amperage draw and heat that may be generated with both running. The H1 and H4 low beam bulbs come on with the high beams on. In hindsight I should have made the jumper wires shorter but it works. Ground goes to ground and the positive lead goes to the leg you choose. HIDs will be added in the future so this is more or less just a test.

[mot]

Mike!

Are you going to do the projector grafting/retrofit or just replace the bulbs in the existing housings?

Thanks for sharing the info.

[treerootCO]

Originally Posted by mot

Mike!

Are you going to do the projector grafting/retrofit or just replace the bulbs in the existing housings?

Thanks for sharing the info.

The projector retrofit is how this started but I am happy with the updated clear lenses for now. HID bulbs will be added to these housings. Here are the pics of the custom rig Mot came across.

[Romer]

Boy Mike, you sure are making a unique cruiser. Nice mod. Can't wait to see pictures of it with your new grille