Does our 1992 Chevy S-10 truck have a short?

My dad had two extra lights put onto the bumper of his 1992 Chevy S10 Truck. He ran into my deck and broke one almost completely off. It was hanging on by one of the power wires. I'm thinking that he caused a short, because now there's no heat and the turning indicators don't work right. The left one doesn't return the indicator switch after a left turn, and the right one doesn't work, but the right arrow lights up when the lights are turned on.

Does anyone think that it's a short? If so, where is the fuse box on a 1992 Chevy S10 Truck?

I'm not sure what the engine size is, but I know that it's an extended cab. I think it has about 60,000 miles on it.