wiring

Folks, I have a 1983 280ZX Turbo Automatic, can anyone tell me what the green and white connector coming from the driver's side near ecu wires is for and where does it connect? Thanks!

Alrighty, Ive got a stock 1978 280z and I'm currently installing an MSD 6A and Blaster 2 coil into the car. After reading any and all forum posts on the topic I came to the conclusion that I would need an MSD Tach Adapter 8920 in order for the MSD box to Communicate to the EFI by upping it to...