[cneda105]

Hi All,

I recently retrofitted NBT in place of my CIC Nav and my backup camera isn't working anymore. I have the Bimmertech MMI and Backup Cam. Has anyone else had this issue? It looks like the MMI unit is not getting power or receiving any signals from the NBT. The unit works perfectly when hooked up to the CIC just not in the NBT. I did have to bridge pins 13&15 on the NBT to get audio working. Also if I disconnect power from the MMI, the NBT shuts down too.

I already e-mail Bimmertech and they suspect it's a hardware issue, I definitely think it's a wiring issue. If anyone had had this issue or knows the wiring of the MMI PnP harness let me know

[Jhnblckwood]

Originally Posted by cneda105

Hi All,

I recently retrofitted NBT in place of my CIC Nav and my backup camera isn't working anymore. I have the Bimmertech MMI and Backup Cam. Has anyone else had this issue? It looks like the MMI unit is not getting power or receiving any signals from the NBT. The unit works perfectly when hooked up to the CIC just not in the NBT. I did have to bridge pins 13&15 on the NBT to get audio working. Also if I disconnect power from the MMI, the NBT shuts down too.

I already e-mail Bimmertech and they suspect it's a hardware issue, I definitely think it's a wiring issue. If anyone had had this issue or knows the wiring of the MMI PnP harness let me know

Are u aware the wiring is different for rear camera from cic to nbt so u may have to switch some wires around.

[Jhnblckwood]

Originally Posted by Jhnblckwood

Are u aware the wiring is different for rear camera from cic to nbt so u may have to switch some wires around.

https://f30.bimmerpost.com/forums/sh...44&page=17

You'll find a diagram on this page.