I am currently trying to use privoxy with tor. I have done the following.
Installed Tor Browser. From command line run: tor -f .\torrc-defaults Netstat -a: shows 127.0.0.1 port 9150 and 9151.
Installed privoxy forward-socks5t / 127.0.0.1:9150 .
On windows 10 allowed incoming and outgoing connections to 8118, 9150 and 9151.
Set proxy on my browser to 127.0.0.1 port 8118
After all of this I receive http 503 error forwarding failure