Thanks Larry- that is sort of my thinking too on defrost. I live in the PNW, so they may come in handy
Yesterday while flying I noticed that the dash pad was bubbling up with the avionics heat, I am thinking about adding fans also.
Doubtful, my bus runs 14.4 volts, 2 fans, used almost continuously 525 hrs., no issues.I notice that most of the computer fans typically have an upper voltage spec of ~13.8V. Alternator output is ~14.2V. Has anybody had an issue with short fan life, popped breaker, etc?