The color line trim is very flexible and "squishy", with a plastic pry tool, you can easily (but carefully) slip it between and/or behind. If the cord were black, it would be a more stealth look than the white Apple cord. I just used one of my many USB cords that came standard with the phone.

 

Is it just a interior heater that you installed? Plugs in to the wall?
I tried putting a small 60W light stand inside driver side footwell for an hour to warm up the interior to room temperature, but it kind of smelled like plastic when I got in so I'm not doing that anymore.

I just carry a 4000 mAh USB battery pack that has a heater function built in and keep it in my pocket.

Oh, since you have the basic radio, do you know what the 1,2,3,4,5,6 buttons can be used for besides storing radio stations? I was hoping it can store shortcuts to things like car status, or clock, or USB playlist but it didn't work.

 

Garden variety Canadian Tire "Little Buddy" car warmer. It came in a blister pack. They fed it through or around the firewall.

I haven't done much with buttons except program the radio stations that carry Jets and Bombers games. The manual says you should be able to set any "page" you can navigate to. I'll have a look tonight.