ITC-5 voltage

[Randy]

I have wind, speed and depth transducers connected to ITC-5 converter, connected to I70 instruments and ES plotter. Recently Wind direction indicator stopped reading wind direction change. Indicator on instrument only changes slightly from "stuck "position. I did test of wind transducer and read only 6 volts between red and ground. I supplied 8 volts from separate power supply and wind instrument preformed normally. The 6 volts was read off of the ITC-5 at wind power spade connector. All other instruments are working fine. I read 8 volts at the speed power connection and wondered if I could safely draw wind power from the speed power connection until I was in a position to replace or repair the ITC-5 converter. If indeed thats the problem.
Thank you for in advance for your help.
Randy