If you own a Volvo 240, then you have probably experienced some electrical problems along the way. Cleaning the grounds that are made from dissimilar metals and applying a dielectric grease or conductive grease (where applicable) will help keep your car running worry free.
The website below explains where to use dielectric vs. conductive grease as well as other electrical information for your vehicle.
https://www.volvoclub.org.uk/faq/Elec...