For lighting circuits, voltage is often stepped down below 12v to control brightness and extend light bulb life expectancy.Ĭheck out the coding section of this forum or for more info about coding. PWM is often used on vehicle's today to bring alternator voltage back down to 12v or lower.

On your O-scope, you should have seen a square wave. In layman's terms, it basically turns the voltage source on and off very rapidly. Has anyone out there have had to deal with this issue and could help me with some wiring, or do I have to build this whole relay-diode thing in my trunk?Īny help would be appreciated as I am a new owner and I'm finding out (quickly) that these cars are not wired like 'normal' cars. I guess I could solve that issue with an in-line diode, but would rather get just a clean signal. I know that I have to use a relay to solve this problem, but when I hooked up a relay to the reverse lights, all it did was chatter. My issue: my aftermarket nav system automatically turns on the camera picture whenever there is a video signal, so as long as I have constant battery power, all I see is the backup camera image. Go figure.Īnyway, after that, I hooked the camera power directly up to the batter and it worked just fine. Suspecting that this was a voltage issue at the reverse light, I measured it with an oscilloscope (yeah, I'm an engineer, I can get my hands on one of those) and I found that the car issues a varying voltage to the reverse lights which my multimeter just averaged or was not smart enough to display as an ocillating voltage. However, all I got on my nav screen was a lot of rolling lines. I measured the voltage on the backup wires as 10.6VDC with a multimete. I initially connectected the power wires to (what I thought) were the correct backup light wires.

I am installing a hard wired aftermarket backup camera. The MMI can be mounted above or under the head unit, if there is enough space, or in the glove box compartment.OK, I have been through all the threads and have not seen this question addressed: In order to install the MMI, you will need to remove the trim that covers the head unit and pull it out to connect the multimedia module. To make it look neat, you would want to hide the cable under the trim. The installation involves fitting the new trunk handle with the camera instead of your original one and running the extension cable from the trunk to the front of the car (to connect it to the MMI). Moreover, no permanent modifications are needed, so the kit is completely lease-friendly. It doesn’t require any remote coding and takes up to 3–4h. The installation of the Rear View Camera MMI is absolutely plug & play. Easily integrated into the trunk handle just like an original BMW backup camera.Allows adding a mirroring device or front view camera for a lower price.Activates automatically when the car goes into reverse.Overrides the native iDrive display with a full-screen camera image.The BMW backup camera kit includes a Multimedia Interface (MMI) - a BimmerTech original module that makes it easy to add a front view camera, one of our mirroring devices (SmartView HD Flex, SmartView Apple TV3 or SmartView Apple TV4). This retrofit is ideal for drivers looking for a flexible park assist solution that leaves room for customizing and expanding your vehicle’s features. When the car is also equipped with PDC,Park Distance Control is displayed on the right side of the screen taking up 1/3 of the camera view. The image takes up the full screen, giving a bigger and clearer picture of what’s behind you. Instead, its display overrides the iDrive screen when the car is put in reverse. This BMW rear view camera doesn’t use the native camera mode of your car. Because the factory pre-set features are not the limit.

It is designed to make your car flexible and compatible with a host of technological upgrades. This rear view camera retrofit is created for those drivers who expect more than just a park assist functionality from a BMW backup camera upgrade.

Aftermarket backup camera bmw