Headlight Relay Wiring Diagram - Low/High Beam Relays, Terminals 30 85 86 87 87a

This document is a wiring diagram showing how to add relays to a vehicle's headlight circuit. It depicts four headlamps, a Low/High Beam lamp and a High Beam lamp on the left side, and a High Beam lamp and a Low/High Beam lamp on the right side, wired through two relays labeled 'Low Beam Relay' and 'High Beam Relay'. The relay trigger wires connect '(To Existing Wiring Harness)', while high-current power is fed from a DC battery (a red arrow in the image highlights an inline fuse/connection point near the battery positive feed). A central chassis ground symbol serves the headlamp grounds. The diagram includes a 'Relay Wiring Guide and Terminal Numbers' legend explaining standard relay terminals: 30 is the high power feed (which must be fused), 85 is the relay coil ground, 86 is the relay coil feed (trigger wire), 87 is the normally open high-power output contact, and 87a is the normally closed high-power output contact. Wire colors shown include red (power feed), green, black, and tan/orange traces for the relay and lamp circuits. A reader can learn the general layout for converting factory headlight wiring to a relay-powered setup with direct battery feed.