Awesome looking Jeep! I almost can't believe how good of a shape it looks to be in. I noticed the pic of the horn. It looks just like the one on my dad's old 75 that I have been trying to get working. It's the old meep meep or jeep jeep horn. My girls loved the sound of it when I got it to work for about 30 seconds! It's a sound that I remember as a kid as well. Good luck with fixing her up!
Instead of me spending all that time wiring into the harness turn signal wiring etc.
Can't I just put some LED's in the back separate, or maybe a rear lense w/them in it. Peach really wants her to have turn signals to help prevent a rear end collision.
Is there a setup like this/aftermarket.
You will have to run the wires regardless. The easiest thing is to simply swap out the single bulb lights for duals in the front and rear, run the light and turn/brake light wires, install the signal stat, and wire it up. The system is really simple and parts are easy to find.
Jr's has a horn on his '74CJ5 and Alyssa on this one. I put some wire to the horn and no go. Might not have had a good connection.
It's probably the least of your worries at this point, but maybe you can get them going. I had to take mine apart multiple times (didn't know what I was doing), but I think I have it whooped now. Those old Spartan model SA horns have a unique sound. Good luck!