If you’ve been following this blog you know that I am close to over zealous when it comes to power consumption. I just ran a test. 18 interior lamps lit at dimmed comfort levels. Running lights on. Main computer and all navigation instruments running. Stereo on and playing music. VHF and AIS radio on standby. Total power consumption was 6.4 A at 12V equal to about 77 watts. Not bad!