That's a really good start - and you have some nice pins to work on.

How about an intro thread ; http://aussiepinball.com/index.php?board=2.0

The lights in the headbox will either be a fuse or the connector in the head - there are three of them, so check for loose wires. You can clean the connectors by using a wire brush on the the contacts.

When you switch on the game - does it automatically tilt ?