the perko socket (ala smokercraft--i have the same) has 2 ridgid pins in the bottom of the socket. the contacts in the post (where the bulb is) are just little springs, designed to contract inside the post. the problem is that there's not a lot of positive contact surface area. you can try and clean the springs, and scuff up the pins to get better contact. check the bulb socket while the post is in the socket. if you don't have your 12Vdc there, it's the connection in the socket.


willy