1Set 2 Headlight Harness H4 Headlight Relay Harness H6054 H4 Relay Harness Toyota Pickup Headlights H4 Wiring Harness Headlight Relay Kit For Toyota 95-97 Tacoma 88-95 Pickup Fix Dual Ground Problem
Brand: KASLIGHT
If you have trouble with your 7x6/5x7/H6054 LED hedlight not working properly, problems such as dim headlights, malfunctioning headlights when using hi/lo beam, this H4 headlamp relay harness below can fix, please buy this if your car suffer from these problem, especially for Toyota Tacoma series.

H4 headlamp Relay Harness Installation Instructions are as below, also more details you can also refer to the main pictures :
The harness is plug and play and will power your lights automatically. Follow these simple steps:
1.Unravel the harness and lay it out in the front of your engine compartment
2.Make sure the side with the relays is sitting on the same side where your battery is installed (before you dress the harness into the body of your car, connect it an make sure the lights work properly)
3.The harness is equipped with a 30A fuse. Connect the red cable coming out of the fuse to the positive (+) side on your battery.
4.Connect the black, 3 prong plug on the harness to the closest car harness headlight plug
5.Connect the ground cables in each of the yellow plugs to the body of the car. You can use existing bolts or self tapping screws but verify that you have a good ground. Connect the yellow plugs in the harness to your headlights and test your low and high beams. Once you have successfully tested your lights, you can dress the harness properly to the body of the vehicle. Attach the relays to the body of the vehicle as well and verify the harness is not pinched, all bolted terminals are properly tightened and all plugs are fully connected.
This 1set 2-headlights h4 headlight relay harness Fixes cars with 2 pcs H4 plug headlamps, such as 7x6 led headlights. Problems like Dim Headlights, Flickering Headlights, Back Feeding Power, Malfunctioning Headlights when using Hi/Low Beams can be fixed with this kaslight 2-headlight h4 headlamp relay. Make a big improvement for visibility on your cars at night.
【IMPORTANT NOTICE】As Toyota Pickup and Toyota Tocoma use a double ground which leads to the headlights not work or only one beam work, this Harness is a must to fix the problem. It may be still complicated to wire in some new relays to run the headlights properly, TAKE IT EASY, it is not the issue of product quality, only because wiring circuit of Toyota series is a little complicated.
【YOUR VEHICLE NEEDS THIS】Perfectly match KASLIGHT H6054 H5054 H6054LL 6014 6052 6053 7X6 led headlights vehicles like Toyota, Jeep Pickup, Tacoma, Subaru, Mitsubishi, or Suzuki 5X7 led headlight harness.
【IMPORTANT NOTICE】If your socket pin is not standard, KASLIGHT H4 9003 HB2 Wiring Harness is needed
【Also fixes】: Overloading the Headlight Switch, Overheating Plugs. If you are upgrading to LED Bulbs or are having trouble with your 7"x6", 4x6", 5-3/4" or any other H4 plug headlights not working properly, this is your fix!! Package includes one set h4 socket led headlight relay kit.