This post is a more detailed breakdown of the process and parts needed to enable Factory Automatic Windscreen Wipers and Automatic Headlights to a WQ Fiesta.
It draws heavily on the exploration and research done in these threads:
WQ Fiesta Options not available in Oz
and
WQ Fiesta XR4 Diagnostics/OBD2 Reverse Engineering
I have not provided specific or absolute part numbers because there are actually quite a few variations of the parts that will be suitable, and doing this sort of conversion will require some commonsense and your results may vary.
* Note: After going through the hardware changes you will need to enable the features in the GEM and that will require a tool such as Forscan and appropriate license and OBD2 cable.
What you need:
- Fiesta/Mondeo/Focus Rain/Light Sensor
- Wiring harness that supports the rain sensor
- Rear view mirror with post to attach the Sensor covers
- Rain/Light Sensor covers
- Headlight Switch with "Auto" position.
In addition to the Ford hardware you'll need to be able to create a light mask on the inside of the windscreen over the area the sensor covers cover, it will need a "window" for the sensor too.
I found that most of the rain sensors don't come with a mounting bracket and many have a damaged gel pad. Mounting can be done with a new adhesive style Gel pad, OR you can bend some simple brackets from
ABS.
I bought a kit of used parts via eBay for around AUD150 delivered.
When this arrived I realised I should replace the glass portion of the mirror due to aging, but luckily the posts and mirrors can be interchanged.
The mirror post needs to have these clips on it to attach the sensor covers. If you google the mirror Part number (014276) you'll find it resolves to different part numbers based on the car, so make sure you specify it's going into a car with Rain sensor.
TBC