That's a good question. They (seller) claimed that some "Porsche cars didn't have a switched 12V+ at the Black ISO A plug"; therefore, would need to supply 12V+ switched from another source like the OEM factory cell phone plug. That long red line is tied to other 12V lines. As it seems confusing, but the 12V constant and switched are supplied on Pin 4 and 7 from the car's ISO plug on analog cars. This is handled differently on MOST/CAN BUS cars hence the need for 12V+ switched.
I am having trouble getting my existing backup camera to work. The only difference in the setup is that the old Kenwood unit had a rear camera mode that would allow me to see video without needing to be in reverse. The existing setup used the reverse light to signal to the radio to show the camera input instead of the DME as shown your video. in the dash where the radio connections are made, I have a black wire along with the yellow RCA with the red pigtail. At the rear, the camera is grounded using the SAP pump bolt. I connected the black wire to the pink of the head unit black connector, RCA to RCA, and the red pigtail to the long red 12v from the same connector. Nothing happens when I put the car into reverse. Does the car need to be on to complete the circuit?
@tloder - You need to test the camera in isolation before connecting it to the radio. Have you done this? There should be three lines to make this work - 6-12+ (switched) from the reverse lights OR the BLUE/BLACK reverse trigger in the car ( this connects to the PINK REVERSE line at the radio) , Ground line from the camera's power supply is GROUNDED, and RED pig tail (on the RCA connector) is connected to the camera's 12V+ line at the rear and connects to the 12V+ RED line (bundle) on the radio.
@tloder - as mentioned in the video series, I prefer NOT to use the reverse tail lights to trigger the reverse circuit in the radio. I use the reverse signal from the car (black/blue cable located at the immobilizer on early 996/986 or at the gear shifter module on newer cars). The tail lights should work, but I preferred a different method. You also need to make sure REVERSE camera is selected in the factory menu of the radio. I may do another video on the Android OS menus in the future. Lot of preparation which means lots of time that I don't have. haha!
Thanks for the response, I got it to work after discovering I had blown the reversing light fuse when removing the old unit or trying to install the new one.
They sent me a harness that had the canbus white connector wired to the headunit black harness connector. Mine also didn’t have the orange wire for illumination in the ISO connector. It ran from the radio black connector to the white canbus. I depinned it from there and borrowed the orange pin for the ISO from the old radio harness. They said they will send me a new proper analog harness but will see if that arrives.
Why is the switched 12vdc wire so long if it only needs to connect to the yellow RCA cable a few inches away?
That's a good question. They (seller) claimed that some "Porsche cars didn't have a switched 12V+ at the Black ISO A plug"; therefore, would need to supply 12V+ switched from another source like the OEM factory cell phone plug. That long red line is tied to other 12V lines. As it seems confusing, but the 12V constant and switched are supplied on Pin 4 and 7 from the car's ISO plug on analog cars. This is handled differently on MOST/CAN BUS cars hence the need for 12V+ switched.
I am having trouble getting my existing backup camera to work. The only difference in the setup is that the old Kenwood unit had a rear camera mode that would allow me to see video without needing to be in reverse.
The existing setup used the reverse light to signal to the radio to show the camera input instead of the DME as shown your video.
in the dash where the radio connections are made, I have a black wire along with the yellow RCA with the red pigtail.
At the rear, the camera is grounded using the SAP pump bolt.
I connected the black wire to the pink of the head unit black connector, RCA to RCA, and the red pigtail to the long red 12v from the same connector.
Nothing happens when I put the car into reverse.
Does the car need to be on to complete the circuit?
@tloder - You need to test the camera in isolation before connecting it to the radio. Have you done this? There should be three lines to make this work - 6-12+ (switched) from the reverse lights OR the BLUE/BLACK reverse trigger in the car ( this connects to the PINK REVERSE line at the radio) , Ground line from the camera's power supply is GROUNDED, and RED pig tail (on the RCA connector) is connected to the camera's 12V+ line at the rear and connects to the 12V+ RED line (bundle) on the radio.
@tloder - as mentioned in the video series, I prefer NOT to use the reverse tail lights to trigger the reverse circuit in the radio. I use the reverse signal from the car (black/blue cable located at the immobilizer on early 996/986 or at the gear shifter module on newer cars). The tail lights should work, but I preferred a different method. You also need to make sure REVERSE camera is selected in the factory menu of the radio. I may do another video on the Android OS menus in the future. Lot of preparation which means lots of time that I don't have. haha!
Thanks for the response, I got it to work after discovering I had blown the reversing light fuse when removing the old unit or trying to install the new one.
They sent me a harness that had the canbus white connector wired to the headunit black harness connector. Mine also didn’t have the orange wire for illumination in the ISO connector. It ran from the radio black connector to the white canbus. I depinned it from there and borrowed the orange pin for the ISO from the old radio harness. They said they will send me a new proper analog harness but will see if that arrives.