USA W/ Daytime Running Light

The current from the FL MAIN is always flowing from the MAIN fuse to HEAD relay (Coil side) to TERMINAL 19 of the daytime running light relay (Main), from DOME fuse to TERMINAL 22 of the daytime running light relay (Main) and from the ALT fuse to Taillight relay (Coil side) to TERMINAL 16 of the daytime running light relay (Main).
When the ignition SW is turned ON, the current flowing through the GAUGE fuse flows to TERMINAL 23 of the daytime running light relay (Main).

1. DAYTIME RUNNING LIGHT OPERATION
When the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 13 of the daytime running light relay (Main). If the parking brake lever is pulled up (Parking brake SW ON) at this time, the relay is not activated so the daytime running light system does not operate. If the parking brake lever is then released (Parking brake SW OFF), a signal is input to TERMINAL 14 of the relay.
This activates the daytime running light relay (Main) and the HEAD relay is turned to ON, so the current flows from the MAIN fuse to the HEAD relay (Point side) to TERMINAL 1 of the DIM RLY DRL NO. 2 relay to TERMINAL 4 to H-LP LH (LWR), H-LP RH (LWR) fuses to TERMINAL 1 of the headlights to TERMINAL 3 to TERMINAL 1 of the daytime running light resistor to TERMINAL 2 to GROUND, causing the headlights to light up (Headlights light up dimmer than normal brightness.). Once the daytime running light system operates and the headlights light up, the headlights remain ON even if the parking brake lever is pulled up (Parking brake SW ON).
If the engine stalls and the ignition SW remains ON, the headlights remain light up even through current is no longer output from TERMINAL L of the generator. If the ignition SW is then turned OFF, the headlights go OFF.
If the engine is started with the parking brake lever released (Parking brake SW OFF), the daytime running light system operates and headlights light up when the engine starts.

2. HEADLIGHT OPERATION
When the light control SW is switched to HEAD position and the dimmer SW is set to LOW position, causing the daytime running light relay (Main) and the HEAD relay to turn ON, so the current flows from the MAIN fuse to HEAD relay (Point side) to DRL NO.2 fuse to TERMINAL 3 of the DRL NO.4 relay to TERMINAL 4 to TERMINAL 18 of the daytime running light relay (Main) to TERMINAL 2 to TERMINAL 3 of the integration relay to TERMINAL 4 to TERMINAL 13 of the light control SW to TERMINAL 16 to GROUND, activating the DRL. NO.4 relay. The current to HEAD relay (Point side) then flows to TERMINAL 1 of the DIM RLY DRL NO. 2 relay to TERMINAL 4 to H-LP LH (LWR), H-LP RH (LWR) fuses to TERMINAL 1 of the headlights to TERMINAL 3 to TERMINAL 1 of the DRL NO.4 relay to TERMINAL 2 to GROUND, causing the headlights to light up at normal intensity.
When the light control SW is switched to HEAD position and the dimmer SW is set to HIGH position, the signal from the dimmer SW is input to the daytime running light relay (Main). This activates the daytime running light relay (Main) and the HEAD relay is turned ON, so the current flows from the MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIM RLY DRL NO. 2 relay to TERMINAL 3 to TERMINAL 20 of the daytime running light relay (Main), activating the DIM RLY DRL NO. 2 relay. This causes current to flow from TERMINAL 1 of the DIM RLY DRL NO. 2 relay to TERMINAL 2 to HEAD LH (U PR), HEAD RH (UPR) fuses to TERMINAL 2 of the headlights to TERMINAL 3 to TERMINAL 1 of the DRL NO.4 relay to TERMINAL 2 to GROUND, causing the headlights to light up at high beam and the high beam indicator light to light up.
When the dimmer SW is switched to FLASH position, the signal from the dimmer SW is input to the daytime running light relay (Main). This activates the daytime running light relay (Main) and the HEAD relay is turned ON, so the current flows from the MAIN fuse to HEAD relay (Point side) to DRL NO.2 fuse to TERMINAL 3 of the DRL NO.4 relay to TERMINAL 4 to TERMINAL 18 of the daytime running light relay (Main) to TERMINAL 2 to TERMINAL 8 of the dimmer SW to TERMINAL 16 to GROUND, activating the DRL NO.4 relay. At the same time, the current flows from the TERMINAL 1 of the DIM RLY DRL NO. 2 relay to TERMINAL 3 to TERMINAL 20 of the daytime running light relay (Main), activating the DIM RLY DRL NO. 2 relay, and also flows from the HEAD LH (UPR), HEAD RH (UPR) fuses to TERMINAL 2 of the headlights to TERMINAL 3 to TERMINAL 1 of the DRL NO.4 relay to TERMINAL 2 to GROUND, causing the headlights to light up at high beam and the high beam indicator light to light up.

3. AUTOMATIC LIGHT CONTROL OPERATION
When the daytime running light is operating and the Automatic control sensor detects a decrease in the ambient light (It continues less than approx. 2500 lux over about 20 seconds, and it is less than 1000 lux.), the automatic light control operation starts. At the same time, daytime running light relay (Main) is activated, so current flows from the ALT fuse to the Taillight relay (Coil side) to TERMINAL 16 of the daytime running light relay (Main), and the DRL NO.2 fuse to the DRL NO.4 relay (Coil side) to TERMINAL 18 of the daytime running light relay (Main), activating both the Taillight relay and the DRL NO.4 relay, so that the taillights and headlights light up.
When the automatic light control sensor detects an increase in the ambient light (It continues more than approx. 1000 lux over about 20 seconds, and it is more than approx. 2500 lux), the ignition SW is turned to OFF, the light control SW is turned to HEAD position, and the automatic light control operation stops.