Since owning my Jeep I've learned there are many issues to deal with when owning a TJ. One of the issues for anyone driving a TJ that is taller than four foot, is the crane necking at stoplights. I really hated looking like a gimp to see what color the stoplight was; so I came up with a solution that I could live with.
I bought 1.5 foot of 5/8in Acrylic rod that was cut in half lengthwise.
I used some clear double sided tape and attached it to my window from the inside. Worked like a charm. You can see the red stoplights in the closeup of the acrylic rod. I was amazed at how well it actually worked. It is better in person than it appears in the photo. The photo is a semi-fisheye shot of a concave shaped rod.
Cheap easy fix, and now I have no more crane neck.