Sun SUPER TACH 2

Can any of you guys tell me the wiring for this tach. It has 4 terminals in back that say T B G and L There was a red wire on B and a yellow on T the other 2 where bare . The tach came with a 67 SS Conv that i bought and was just thrown in a box with some other parts. Would the yellow T go to the dist. The red B to the power The one that says L would be the Light, and G be ground. Also would this Tach need a power box like some of the Sun tach do. It has a slide in the back that says zero corrector and a srcew that says 4 6 8 These are no problem just need the wiring. I'm running a 427 with HEI Dist. Thanks for any help Dirks SS