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Pete, Electronic Engineer
Category: Marine Electronics
Satisfied Customers: 17642
Experience:  Over 16 years of experience installing and repairing electronics.
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I need to connect my GPS Map 640 to an older auto helm St

Customer Question

I need to connect my GPS Map 640 to an older auto helm St 4000.
The connection on the control head on auto helm says NMEA + and-. There also are Sea Talk slots?
Submitted: 1 year ago.
Category: Marine Electronics
Expert:  Pete replied 1 year ago.
Hi Ron,You can connect the Autohelm to the GPSMap 640 via the ST 4000 NMEA 0183 "in" terminal.
Customer: replied 1 year ago.
Hi Pete,
Sorry your answer isn't sufficient.
There is no "in" terminal. Also, there are different colored wires on the Gps. You don't tell me which goes where. I do not want to pay for your answer.

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