I received the TeslaOffer kit with foot sensor and plan on installing it myself this weekend.
To prepare for the installation, I combined the two videos TeslaOffer (original and updated) into one to make it easier to follow:
I spent about 5 hours installing the kit (not quite done yet, see below why).
The videos and installation manual were mostly fine but found them lacking in certain areas. I’ll share some of the gaps below.
During the first two hours, I removed the panels per the video from the trunk, trunk lid, frunk, and front driver’s side, as well as wiring the main harness from the trunk area to the trunk lid.
The latter is clearly the biggest pain point of the install. Definitely use lubricant or soap & water to slowly pull the wires through, and make sure you tape them well together without big lumps. It was also helpful to unhook either end of the rubber tube and bunch them up a bit to put the tube in the straightest line possible.
The next two hours were spent wiring the rest of the cables, such as the CAN bundle and optional trunk button, as well as the power cable.
I chose to wire the latter to the battery, mainly because I want to leave the kit “awake” for whenever I swipe my foot under the trunk (I got the optional foot sensor), but also because it was super difficult to get to the alternate power source under the dash.
To do that, you’d have to remove another panel and unglue a wire connector that blocks the 12V bolt, which I wasn’t comfortable doing.
A note on wiring the 12V to the frunk: drilling a small size hole through that large rubber gasket (that already has 2 power cables going through it) was not enough, so I bent the 12V connector together a bit to give it more of a round shape.
After I managed to pull it through the rubber gasket, I unfolded the connector with pliers - easy enough and much better than drilling a massive hole through the gasket, which I’m assuming is there to prevent water ingress to the cabin.
About that foot sensor: in my version of the kit, it connects to a cable that has 4 wires (red, white, green with a long red extension, and black with a U connector).
The green and black are obvious to connect per the manual/videos, but there is no mention of red and white. I found out red is 12V, which is also easy to deduce where to connect, but white is “ACC” which I have no idea what to connect with.
I’m assuming it means “accessory” but that still doesn’t help me figure out where to connect that white wire. So I’m leaving the foot connector off for now.
The last hour of my installation was spent installing the trunk button on the lid, the trunk button in the drivers area, and putting (almost) everything back together.
The trunk lid button was easy to install, but I had a hard time figuring out where to put the other button in the front. I had wired it with the CAN wire so it came out by the dead pedal.
I wanted to put it within arm’s reach but out of sight, as it is backlit in red all the time and that could be annoying at night.
Also, the button has a fairly deep backside, so I had to be careful where to drill the panel to make sure there was enough space behind, once reinstalled (and the hole require is pretty large, so you don’t want to mess this one up).
Putting the other panels together was pretty easy, but I’m leaving the bottom trunk ones off until I can install the foot sensor, which requires removing the bumper.
I hope this was helpful. If anyone knows where to connect the ACC wire, please share your insights!
