Parking\hazard and Stop\Parking Light no longer working

Can you say exactly waht circuit he ran it into? He might have blew the bulbs.

The top bulbs on both side. What do they do? The brake lights, parking lights, turn signals reply so ican help you out

I suspect a wire could be melted off somewhere. At the brake switch you will see two wires on it have somone look at the lights and you should touch the two wires together breifly. If they both illuminate the switch is bad. If nothing find the wire that is hot from the switch and the one that is neutral
follow the neutral one to differnt sources. Let me know where it al goes or if it goes straight to the brake lights. If it goes right to it then suspect a melted wire and what you should do is run a new neutral wire to the light. If it goes to various switchs touch the hot wire to it at those places untill you get it to light. But since it only happens on the left side of the car and the other side works I suspect a melted wire and I would run a wire from the two bulbs that aare burned off and follow themto the source and splice them in.

The last thing I told you would be pretty much trouble free. It wont effect anything either. Its just you might have to splice in another wire if you have to tow a trailer. Because of the bypass.