Welcome to the forum! I highly recommend you read your owner's manual. If you don't have one you can download one. Also, get yourself a factory service manual. Mine has paid for itself quickly. Try eBay for that. Also, look at YouTube for videos on how to fix some of your specific issues. On the gauge cluster light, that may be a replacement bulb or it might require some soldering. The map light cover pops off for bulb replacement, just be sure to pry it off gently so as to not break it. On the belt issue, it may need a belt, or it could be the belt tensioner/pulley. Pull the door panel and check all the linkage rods to see if they are rusted or need lubrication or straightening, a good reason for that factory service manual, which also includes extensive troubleshooting sections for these issues. Try a wrecking yard for that reservoir lid. Keep us posted on your adventures, and enjoy your CR-V!