Halogen bulb over heating and burst

Hi, I am Chirayu. I am having a halogen bulb heating problem in my car. Due to very high temperature of halogen bulb plastic reflection coating (surrounded to bulb/headlamp box inner side) got melt when I drove car for eighty km in night and one side bulb burst.

My car is a home for mice, they cut some wire (relay to headlamp wire) under bonnet some week ago. I joint the wire using another good quality piece of wire (not the same quality).

I think the problem is due to wiring work done a week before night drive of eighty km.

Please give me some idea what to do. I am soon going to sale my car in scrap, give me solution that I can manage to use with headlamps for next five to six months.

Thank You.