Hola :
He encontrado esto en la web de NASA
http://www.nasamarine.com/wp-content...Wind-Log-1.pdf
3:3 CONNECTING THE DISPLAY
Connect the black wire to the negative supply and the red wire to the positive via a 250 milli-amp fuse. The red wire of the alarm is also connected to the positive supply whilst the black wire connects to the green wire from the display unit. The alarm is not watertight and must be mounted in a protected position. Plug the transducer into the socket on the display unit.
A ver si te ayuda
Saludos
