I eat my R6
Join Date: Dec 2014
Location: Southwest Ohio
Bike: 2008 Yamaha YZF-R6s Stock
Re: Wiring help
Something to keep in mind, you don't want to be able to run your LEDs with the bike running on battery.
You say the DRL looks weird with low beam... I'm going to assume that this merely because low beam only runs the left lamp?
So your aim is to modify to allow manually switching off low beam... and when the low beam goes off, the DRLs come on?
I'm basing this from a second gen schematic. Third gen may be different.
Rocker Switch 1 - Low Amp 12v
Relay 1 - Low Beam - Ground is switched by ECU
Relay 2 - High Beam - Rocker switch feeds 12v
Left Headlamp - Switched via Relay 1
Right Headlamp - Switched via Relay 2
You're adding three components:
Rocker Switch 2
Your ECU grounds the 12v coming through Relay 1, which activates the left headlamp.
The added components, specifically the Rocker Switch 2, will stand between the ECU and Relay 1, Relay 3. One side of the Rocker Switch 2, will allow the ECU to ground the 12v coming from Relay 1 (left headlamp) --OR-- the other side of the switch will ground the 12v coming from Relay 3 (DRL LED). It appears that Relay 2 slaves off of Relay 1. Flipping the high beam switch while Relay 3 is engaged, should have no impact.
If you want to be able to run both headlamps and DRL, then a different setup will be required.
Rather than assume, it is best to check into the power requirements for the DRL strips to ensure that they won't slowly cook your wiring or blow the fuse.