Need help with irv install.

[dallasrules]

I have an irv68 stereo. I installed it in another trailer, but removed it when I sold it. I don't have the manuals anymore. I am attempting to install it in my daughter's wildcat, but I am confused. The power connector has 4 wires.
Black -ground
Yellow-bat (has 15a fuse)
Red - acc
Blue - ant power out.

I have black and red coming in for dc power.
I tried connecting black to black and the red to the yellow. When plugging in the connector, I got sparks. It blew the fuse. I tries connecting the red to red, but still no power.

Does anyone know which way this is supposed to be connected? Apparently before I used both the red and yellow wires because both are stripped. The blue wire was not stripped so I didn't use it before.

The irv user manuals I can find don't say how to wire it, just show the diagram which is on the back of the radio. I have installed another irv before and didn't have any issues, but the red and yellow wires have me confused.