my brother in laws 97 4 runner that had been parked for some time needed a new battery. He installed and now all that works is the head lights. nothing else. I didn't install it so maybe he touched the terminal's in the wrong polarity for a moment. Not sure. What I am sure of is that only the head lights are getting power now, nothing in the ignition starter etc. Is there a main fuse that could be out? if so where is it. thanks mr wizzard

 

I not sure about a 97 model, but did fix one on a 91 22re model that had the same thing happen to it. It was the 80 amp fuse that got blown. This might get you going in the right direction.

 

is that fuse in the box under the hood? all i saw in there was a 50 amp "head" fuse plus all the other smaller fuses