Brake Light Problem

My brake lights are out. Ive been putting this off for far too long. Heres the deal.
Replaced the fuse and blew it again on the 5 minute drive home. Can't find any shorts anywhere, I have a trailer harness, no problems there. I'm assuming the switch is good.
My theory is I might need to up my fuse size to accommodate the aftermarket housings. Maybe the bulbs in the new housing draws more power than stock bulbs, idk.
The factory lights use a dual filament bulb correct? This housing has two separate bulbs for brakes and tail lights...I'll post a picture of the lights. I can't remember the brand. Kinda hard to see, they're blacked out.
Anyone else have any ideas?

 

Use LED and your amp draw will decrease. The fuse is there to protect the wire. You don't want to burn your truck down because your lights are popping fuses

 

Yeahhhhhh good point...
So do you think that is likely my problem or heard of anyone else with these issues?

 

I'm going off of the information you have given me and taken an educated guess. It is the most likely possibility according to your description.