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jwlc80 jwlc80 is offline
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Join Date: Oct 2019
Car: 328i
Smile Will this JB4 suit 2015 328i? - 10-30-2019, 07:16 AM


I'm really hoping to get some advice here please. I've spend hours researching on the internet and forums trying to answer my own questions but end up really confused. So would really appreciate some help please.

I got a JB4 from a workshop but I'm not sure if it fits my car.

I understand my 2015 328 is a EWG. I also don't have any mods and don't plan to do anything else other than a basic JB4. Which JB4 model is mine and will this fit my car?

1) Is it safe to install without knowing what other parameters has been changed in the JB4 unit?

2) Also, assuming I only need the to plug in 2 things right? The plugs with the rainbow wires and the plug with the brown wires.

3) I read in the installation instructions that JB4 EWG models don't have a seperate power and ground wire. Does that mean there is no need to connect the power wires? What should I do with the red and black power wires?

Thanks so much.
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