W203 Reverse activated 12V supply

[Sprint-Man]

Where can I pick up a 12V supply that is activated by selecting reverse on my C180K (05 Saloon/Classic), I'm fitting a Parking Sensor and the current draw is minimal, any of you experts already installed one?

 

[reflexboy]

The wire feeding the reverse light bulb

 

[DennisTheMenace]

Or if the rear light signal is too low, use a 4 pin relay and find a good 12v signal and use the reversing light signal to trigger the relay.

 

[miro]

Where can I pick up a 12V supply that is activated by selecting reverse on my C180K (05 Saloon/Classic), I'm fitting a Parking Sensor and the current draw is minimal, any of you experts already installed one?

From the parktronic socket on the rear Sam.

 

[umik]

I've been told it's the blue and grey one, brown is the earth. Not 100% sure

 

[markmifsud]

You could pick up the feed via the switch on the autobox, I believe it sits to the front right of the gear shift lever. I found it to be less hassle to just run a wire from my rear light cluster back to the HeadUnit.

 

[shorty]

Take a feed from the reversing light at the light cluster . Ive fitted these systems countless times , very easy .

 

[miro]

Take a feed from the reversing light at the light cluster . Ive fitted these systems countless times , very easy .

That is the easiest thing. Always.

 

[mr. shr]

Take a feed from the reversing light at the light cluster . Ive fitted these systems countless times , very easy .

That's what I did when fitting sensors to a W211 recently.
All works just fine.

 

[Sprint-Man]

Spot-On, Blue with a Grey Tracer it is, many thanks!