Blowning through fuses when shifting into 4wd

I just picked up a sweet 1994 4runner last week. I just decided to test out the 4wd capabilities today. When I shifted it down form H2 to H4 the Gauge cluster and all 4 windows stopped working. I check the fuses and the red one marked gauge 15A was blown. I thought it may have been a freak accident to I installed a new one and tested the 4wd again. Same thing happened, it blew again. Does this happen to anyone?

I noticed that the previous owner has a light bar installed and two kc lights. maybe this extra draw could be doing this. I haven't really investigated it yet as it just happened.

any advice would be greatly appreciated.