For those that are adding the 4 pins that Jimmy supplies for the CanBus part I can offer some tips.
In order to access the connector you have to unbolt most of the driver wheel well and move it out of the way. The harness connectors are there and it’s much easier to slide the harness off of a hook that is behind the harness. Once off, it’s somewhat intuitive to separate the connectors. Look for the red tab and pull the handle thing and it will separate. It needs some effort. The first picture shows the harness separated.
The goal is to get the four pins/connectors into the backside of the harness. In the first picture you can see where I’ve put the pin into the back of the harness. Its labeled 6 as it goes into the 6 slot on the harness.
In the second picture I’m looking at where the pins will come through from the other side of the connector. The purple tab needs to slide left and it will if you slide a very small screw driver to the base of the purple tab on the right and then push left. This has to be done because the pins won’t go through to the other side. Moving the tab let’s the pins go through.
Before you start putting the pins through their respective holes (5,6,46,47) I’d recommend pulling the little rubber grommets that are in the holes out. If you don’t, when you are pushing the pin through the grommet will get pushed down and it’s almost impossible to get the pin to go through.
Once you have all 4 pins through, push the purple tab back to it’s original position.