Tip of the day, all be it small!
TIP: Spray were you can, under the bonnett etc with WD40, miracle stuff for dry connections, squeeky belts etc. Better still, obtain a good quality waterproof petroleum jelly in a tube and use small amounts on all connectors. I use it in the earth moving industry.
NOTE: We are fortunate here in South Australia to live in a dry warm climate at the best of times, mind you its bloody freezing here at nights (1-5C) at present. With this in mind being a rusty old Auto Electrician, it doesn't play up so much with connections as maybe your varying climates do. With that in mind I have allready found some dodgy connectors. European vehicles have been sinominous with dodgy wiring, especially our favourite Italian vehicles.
Best regards, Anthony