Blackbox DVR/Dashcam

[baludoy]

i have a spare dash cam lying around the house and it got me wondering if it's possible for me to use it as a rear facing dash cam?

there's an available power accessory socket in my truck's rear cargo hold so i reckon i can just tuck the wires neatly in the tailgate's weather strip for a clean, hidden look. but the problem is the tinted rear windshield has those parallel linear resistive conductors for defogging/demisting w/c may hinder the efficacy of the suction cup appendage of the dashcam.

anyone here got tips to get around that little bunch of protruding obstacles?