Let there be light!
Outback Proven delivers the goods once again
The 100 Series Land Cruiser (like many other stock vehicles) badly suffers from the poor lighting performance out of the headlights. While both high and low beams benefit from the upgraded loom, the low beams stand to gain the most as they are just dismal at best in stock form. I added the 'upgrade' bulbs and that surely helped but it was still needing attention.
High quality connectors, harness, relays and fuse assemblies
Harness Arrangement & Layout
Rough Layout Under the Hood
Australian manufacture Piranha has a solution specific to the US specification 100 Series Land Cruiser with plugs that match the factory harness for a 'zero-splice' fit, Piranha part# LIS100. Simply unplug the factory harness from the headlamp bulbs and then plug the Piranha harness directly into the bulbs, they are plug specific so you can't go wrong. Depending how you mount the relays and fuse holders you will either plug the Piranha kit into your stock harness on the passenger side or drivers, doesn't really matter. One each side (driver/passenger) you will need to tie the ground into an existing bolt (which are present on both sides) and then last but not least, connect the power to the battery. As the battery is on the left-hand side, I chose to mount the relays and fuses on that side as well.
Relay & Fuse Bank
Installation is very straightforward and can be done in under an hour depending on your under hood setup. The engine bay of my 100 Series is getting quite stuff so I had to spend some extra time building a relay and fuse mount bracket. I could have placed them in the corner near the main battery but it would borderline require me to pull the battery to swap a fuse or relay in the Piranha harness. The bracket simply bolts to the inner fender well just inboard of the main system fuse block. It's an overkill solution but provides me instant access to the relays and fuses.
Template for Relay/Fuse Bracket
Test Fitting Template In Position
Completed Bracket Ready For Install
Once you have those mounted and everything connected. Test the system and then tidy up your wiring with a handful of zip ties. You shouldn't need to cut, lengthen or trim anything unless you rearrange things or require the relays/fuses to be in a specific spot.
Bracket Mounted, Relay's & Fuse Holders In Place
Finished!
The Piranha harness has a light-on powered spare lead for both the high-beams and the low-beams. These allow perfect trigger points for auxiliary light kits if needed. I didn't utilize them for my setup but I zip tied them under the relays in the event I do need them in the future. I've got some before and after light shots I'm working on and will be headed on a trip soon to the desert to really get a feel for the improvement.