Banpei's two door panda Trueno from Japan

[banpei]

Thanks!

I measured the load on one of the fog lights, and it drew 27mA without the lamps turned on. I don't think I have to worry too much about it consuming too much power.

My curiosity was far too big, so I did a teardown on one of the fog lights:


Electrical tape was used to keep moisture out...

At least they also used some silicone kit to seal the glass and the reflector:


This is the inner guts of the lamp:

As expected, on the left is a set of gears with a motor and two switches. The motor and switches are connected to a logic board in the middle. The power comes in from the bottom and powers the logic board. This means the logic board is always powered on. I didn't expect a fancy logic board like this, but maybe this is just an off-the-shelf programmable board they used.

Finally, as I expected, the light bulb is an LED bulb:

There are no ratings on it, but I found similar bulbs rated either 7.5 watts or 15 watts. This means the maximum power it will draw won't be more than 15 to 30 watts in total. That's less than 2.5A, so I don't think it's an issue to draw 12V+ from the cabin. This makes wiring the fog lights a lot easier than I thought earlier. This way, the power to the fog lights will be switched by the ignition as well, and that also prevents it from draining the battery.