I don’t know what it goes to. I don’t know if it works. If you apply 12V to the power input the LED comes on. The RA and DEC have 8 pin DIN connectors. There’s a deep scratch in the plastic running through the ‘D’ up to the ‘West’ button but it’s only a scratch. It’s not a crack.
PayPal preferred. Money Order or Check OK (corrector ships when check clears)