- blusmoke wrote:
the power runs straight from the regulator to the headlight on the wr, you could just snip that wire and add any on/off switch you'd like.
LOL, it's not quite that simple. Headlight power runs from the regulator, through the key switch, through the headlight fuse, thru the headlight relay, through the Hi/Low Beam switch, and to the headlight. The ECU turns the headlight relay on after the engine is running, which is why it doesn't come on when you first turn the key on.
The key-switched circuit from the headlight fuse also powers the turn signal relay, so you'll need to be careful where you insert a switch there if you don't want to switch the turn signals completely off too. Looking at the wiring diagram below I suggest one of the following:
Option 1: Insert a 15 amp rated single-pole switch between the headlight relay and the hi/low beam switch (blue wire with white stripe in the diagram below), or
Option 2: Insert a single-pole switch between the headlight relay and the ECU (yellow wire with black stripe in the diagram below.) This is a low-amperage circuit that controls the headlight relay so just about any single-pole switch should work.
Hint: Right-click and open the image below in a new browser tab, or right-click and save it to your computer if you want to view the full-size version.