OEM Toyota – Fits FJ40/45, FJ55 – 1958 – 7/1970 This brand new electrical junction block is a direct replacement for your old, worn, and cracked unit. There are 2 of these mounted in the engine bay – 1 on each inner fender well. They wire inline with the headlight/turn signal/clearance light circuit. Its main purpose is to conduct a substantial current of electricity, and reduce power loss within the lighting system. This is due to the larger surface area compared to the wires. – If your headlights are dim or malfunctioning, you may need to look at the junction blocks. – Sold individually