74 scamp, no turn signals. All other lights work.

I answered in your other thread. It would be good to continue on here so things don't become confused

The ammeter "all the way" is not good. Either you have a short, or the ammeter is stuck. You probably blew up the fuse link (Some later cars have more than one fuse link)

So some basics. WHAT ARE we workin on? Year make model?

Do you have the proper factory service manual?

If not, go to MyMopar and download one

http://www.mymopar.com/index.php?pid=31

While you are on that page, hit

"wiring electrical diagrams" and download one of the aftermarket diagrams posted. These are often not as complete as the service manual, but they are sometimes easier to follow

Now that we know you have a 74, the latest shop manual over at MyMopar is the 73, "which will be close" It will NOT have the seat belt interlock wiring

Also I will tell you, that since there is no 74 manual to download (that we know of) you need to get "on the air" and buy one, either a used original, a paper reprint, or "on CD"