Anyway a faulty switch (or worn out more likely) caused my PSU to blow up so I took it as a chance to replace it and heated the interior while I was at it.
Here's the results.
BEFORE:
[img]http://i.imgur.com/tvzNCXZ.jpg?2[/img]
AFTER:
[img]http://i.imgur.com/ciHl0wZ.jpg?2[/img]
I used mainly 6mm black pet braid as well as some 8mm black/grey braid at the top.
I split the ribbon cables and shortened them as well. That was the scariest part

Took way too long since it was during this process I figured out the switch was faulty. Got a nice new round switch like the v2's have.
I think it improved the heating efficiency of the bed probably due to shortening the heater wires. That or the fancy PSU I got somehow helps. I'd like to think the PSU is the reason, helps me sleep at night.