Just finished installing the EVoffer power trunk on my 2018 M3P. Thanks to tlr1000 and others who posted tips. Thought I would add a few of my own.
v3 kit
- no buzzer, its in the ecu
- the plug connectors are not the color on the videos anymore - connect them up first prior to starting this install to get a feel for which wire is what. its self explanatory and the connectors only fit one way
Installation notes:
- fishing the wire to the trunk lid is easy, took me 10 minutes. I think the key is using lots of wire pull lube. I basically squeezed a load of it from the bottle directly into the top of the tube. I followed the ev offer video, unhooking the tube from the zip straps I think helps a lot.
- getting the strut wires into the trunk is much harder. I used the plugs on the back of the trunk area, pictured in tlr.'s post at the start of this thread, but I did it without removing the bumper (I didn't want the foot sensor)
- I used the method shown in the official ev offer install video with the wire pull tool
- on the driver side, the hole is smaller and I struggled to get both connectors through the whole. I ended up cutting off the larger plug and used crimp connectors to re-attach it. works fine, adds a couple of minutes and wish I would have just done this straight away instead of wasting time trying to get it through
- the passenger side is easier as the hole is bigger, both connectors can make it through no issues
- I cut the plugs to accommodate the wires, but am going to go back and seal it with body sealant of some sort given I live in a rainy climate
- I used VC right for power. this is easy, one tip is to bend the u shaped connector right between the crimp and the start of the u so it's easier to get behind the nut. undo the nut as little as possible so there is friction when you tighten it back down so it doesn't slip out. This took me about 10 minutes
- For ground, I used a body mount for one of the subwoofer brackets that is close to the tail light so I could mount the ecu with double side tape to the back body of the car just under the sub bracket. reason for this is the ground wire is connected to the power wire and there is not a lot of slack, so the ground needs to be close to where you intend to mount the ecu
hope somebody finds this helpful. If anybody in the seattle/bellevue area needs a wire puller and basically an almost full bottle of Klein wire pull lube, let me know, free. pickup in Dt bellevue.