Of course laying cables is nothing fancy and anybody can do it. The dirty part is to cut the wall, dig the trench and patch everything up as new again. If you can get someone else to do that part for you for free, DIY is a way to go. My electrician charged me rm350 for installing 7 core armour cable from key pad to control box, 5 core from left post to right post. and 2 close-only switches on outside and inside the gate. The autogate supplier quoted me rm500.