Tach wiring question

Got the tach apart. The bezel is simply press-fit to the body of the tach. It didn't want to come apart happily.

I could see, maybe, some damage on the PCB...expected. Getting to the PCB was fun. There are three plastic stand-offs seeming to hold it together, but releasing (a squeeze) them and gently moving the tach/face apart the needle is, of course, in the way. Sometimes a simple press fit, sometimes glued, I didn't want to force it much.

On the back of the PCB are three solder puddles that correspond to apparent connections to the tach servo/motor/whatever it's called. Unsoldered the puddles to find swedged pins in place. Aha! The drive motor PLUGS IN via those pins!

Pried on them a bit from the inside, gently worked the whole mess apart. Ended up with the drive motor still attached to the needle through the glass, the PCB in-hand.

The damage? A trace was burned from the input (green) wire. Expected. Unfortunately what it went TO, I couldn't tell. There is a burn on the board where something was, some kind of protection I suppose. There is a feed-through close to that spot that shows some bit of silver IN the hole, but around the feed-through there is no pad. The feed-through on the other side goes to a chip. Looks like a good place to wire up the input! I patched in a bit of 30ga. wire. Whatever it might do or why, it can't cause as much damage as whatever burned the fiberglass of the board in the first place.

The obvious question: Did that guess-fix work?

Stay tuned! ;) I'm looking for a round tuit.

**edit**

Nope. A no good guess. 'But...but...it looked so logical at the time!'

Result: NO meter movement and a constant 'shift' lite on.

Time for a new tach. Does anyone make what I want? ...a 3-3/4" white-face, 8k, internal shift lite tach? Not that I've found.

gloom despair and agony on me