Automatic headlights

This add-on does what Porsche should have done from the factory.

What it does is very simple: When it gets dark, the headlights turn on. When it is bright outside they turn off.

The installation is plug & play:
I am using Porsche OEM connectors, so it’s literally a snap. Here’s what you have to do (please also look at the detailed instructions in the “Documentation” section of this site):

• Unplug your light switch from the factory harness

• Plug this device between the light switch and the harness

• Route and “hide” the light sensor

The heart of the box is an Arduino micro-controller, which uses a light sensor to measure the ambient light ~25 times / second and then follows several algorithms to determine when to turn the lights on and off.

The operation is as simple as that:

Setting the light switch to HOME, enables the auto-light function, that’s it.

Only for 997.1 and 987.1 owners: You can now choose between two options
- no DRL option
- with DRL option

“DRL option” means, that the owner can have the front foglights and/or the side markers (aka parking lights) automatically on with the ignition. For this feature to work, the light switch must be set to “HOME”. Please refer to the last 3 pages of the installation manual (in the “Documentation” section of this site) on how to configure these options to your liking. The device ships by default with “front foglights on”.
With the “DRL option” the fog lights will stay on all the time, as long as the light switch is set to “HOME”.