battery starter and ground wire?

what to do if i unhooked my starter without unhooking my battery and the hot and gound wire caught on fire

Answer:

Replace the cables, and chalk it up as a learning experience. Now you know why shops charge so much. They learn before doing.

replace wires that is burn but remember to unhook next time

Be thankful that's all that happened. You could loose fingers doing the starter motor without disconnecting the power to it. Among many, many, other things.... Follow the advice posted from othes here..

Unhook your battery and replace both wires.

first always disconnect the battery. 2nd replace all the burnt wiring. 3rd. make sure you get all the burnt wires. check the wires going to the starter relay also. 4th. do not mess with anything electrical on the vehicle without disconnecting the battery. ect.. alt. starter. batt. and so on.