7:30 start, 17:30 finish, battery monitor and associated shunt, significant rewiring required. Over time the battery isolator had been bypassed with direct to battery wiring for fridge, charger, solar. In order to put isolator and shunt in line took some particularly nasty stress position. Anyway, done plus mppt for solar. Some tidying of cables needed. New speed through water instrument arrives tomorrow so that will need fitting. No luck with curtains just yet, my cheapo Ikea ones not in stock and they are certainly needed with long daylight hours. New heater wired up and fuel line run to front of engine room, need additional items to complete installation. Two good buys Wednesday, a 4.6 euro bluetooth speaker and a new very powerful head torch for 40. Off to snorebox.