e120 CLASSIC NETWORK

I have a Raymarine E120 classic with a Seatalk hs and NMEA 2000 backbone that I am wanting to get GPS capabilities on. Currently my GPS is hooked up to a C80 classis via a seatalk plug from a gyroplus II black box. Is there an adaptor wire (and if so what is the model number) that I need to install on the gyro plus II that would hook into a T on the sea talk HS or NMEA backbone?

Thank you in advance.