I have a 98 Ranger that's just shy of 50K on the clock. I don't think the engine since I bought the truck 2nd hand has ever seen a cleaning. It's starting to look really grimy, and dusty in there and I want to keep my engine in top shape. This will be my first time cleaning it and I don't want to harm anything electrical under there if I can help it. I know I need to cover up the basic electrical stuff such as the battery, alternator and computer, is there anything else I should cover up under there to protect it???? Or any advice and tips you guys may have, feel free to jump in. Tks all,,,,,,,,91