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22-01-2023, 09:23 PM
New to the forum having just bought a 2019 Berlingo van. As its used for work I am wanting to improve the load area lighting. Currently managed to put a 12V strip light in but can only get it to work if the existing light is switched to permanently on. I want it to come on when the doors open with the existing light. Any help would be appreciated. I'm sure there is someone on here that will know exactly what to do.
Cheers in advance all.
Tom
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23-01-2023, 07:02 AM
(This post was last modified: 23-01-2023, 07:07 AM by Zion.)
The lighting, along with everything else, is controlled by a multiplexer known as the BSI (body systems interface) computer and it does not like LEDs.
You'll find the led might work if you take the original bulb out. But maybe not. I've tried and usually they stay on all the time as the BSI uses bulb detection and tries to power any "strange" devices it finds connected to it. Pulling the original bulb often works for lights.
Welcome to french electrical systems.
The switch which "controls" the rear light, is not actually controlling it at all, neither are the door locks. They only tell the BSI you opened a door or you want the light on, and it in turn, powers up the light. If it finds something else connected like an led, it's likely to cause the output to turn on and stay on.
I have had many tussles with it and I'm an electronics engineer. It's not designed to be messed with believe me.
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• Matt Haigh