Ok, I installed a new wiring harness. I bought it from Walck's.

Questions #1;
Is it normal that I have current even when the key is not at the ignition position or not there at all?
I'm able to turn on the light even if the key is removed...
I'm pretty sure that I wired it ok up to the key switch.
The only screw identified on the key switch is marked with a T. There is three screw. I assumed this one was the battery screw.
The key switch has a left, center and right position. I wired it to have power when the key is turned to the right. I don't understand.
I feel stupid.

Question #2;
The battery negative pole was connected on the fender. Is it the right place?

Question #3;
I got a Sparton SCS-3R signal turn switch. I installed it. The pilot light on it does not light up.
I can see (not able to measure it) voltage going to it but I think that the new flasher is too fast.
The bulb is good. It's a 53. Even if it's for a 12 volts, it should light up, right?
I will try to find a 51 and give it a try.

Question #4;
All my light worked even when using the turn signal except for the brake light.
The tail lights are on and I can see it flashing left and right but I have nothing if I hit the brake.
Is there a way to test the brake switch? I guess I can bypass it and connect the wire together.
Is there any ajustment on it?

The place where your ground is connected is for attaching a brace or arm from the battery hold down frame. There would have been a wing nut there...

My negative cables on both the 55 CJ-5 and the 51 CJ-3a are connected to the front bottom bolt on the oil filter bracket...

I don't see any hole or place in front of the battery tray to connect it there.
Any pictures of it?

Edited:

Ok I found this on Bob W website:
Negative Battery Cable
The 1949 CJ-2A & CJ-3A Parts List and the 1955 Master Parts List both show the negative cable as "640257 Strap, battery ground". Again the length is not given but the measured length of an original 1950 negative battery cable is 14 inches from center to center of the terminals. There is no insulation covering the wire on this cable. The negative cable is bolted to the vehicle frame on the front of the battery box support just behind the grille. It is attached to the frame with a 3/8" bolt and two internal/external toothed lock washers to ensure a good ground.

I will rewire the negative cable to the frame like it's mention in Bob website.
I asked the question because it does'nt seem right to me to have it on the fenders but the previous owner has it like this so...

The ground strap is where it should. You can see it in the picture.

And for questions #1, Thanks Stony and Tim. I feel better now.

I will check the ground on the signal turn switch but I'm not a fan of scratching paint...

Quebec Jeep wrote on 08/15/13 at 15:32:55:


I hear ya!  Me neither.  I couldn't remove enough to make the connection consistent.  That's why I finally ran the extra ground wire. 

Here is a photo showing the position of the ground cable on the front of the battery tray...