Turn signal plug problem

[Orence1]

After spending a lot of time trying to diagnose a non-working rt. front turn signal on my 72 C-10 I finally determined that the socket plug that the turn signal unit plugs into is bad. I can wiggle it with my test light plugged in and the light will work and then not work. The rest of the front wiring harness works fine. Is it possible to replace that plug by wiring in a replacement? If so, can anyone suggest a source for a replacement plug. If that is not an option, has anybody done a workaround for a bad plug? Any help appreciated.