Some tips for beginners:
1. Check the resources section before posting, many wiring diagrams and service procedures are already documented here:
Golf Cart Wiring Diagrams for EZGO, Club Car, Yamaha and all other Golf Carts
cartaholics.com
2. Try to identify the year, make, model, and drive type. This information is needed for troubleshooting. You are more likely to get a response if we don't have to ask if you have a series or regen golf cart. If you aren't sure share the serial number and post pictures of the mechanical parts.
3. Try to be informative but concise. Posts short on details or containing enough text to form a brief novel are unlikely to get a response. Try to limit irrelevant information and focus on the problem and what testing has been performed.
4. Don't forget the basics. What is battery voltage static AND under load? Is the solenoid clicking?
5. Use the search function to see if there are recent threads with similar issues. Check the date before replying to a 10 year old thread.
6. Read through the responses. If someone has suggested a particular test(s) that is relevant complete it, you might not get a response if it's just to tell you to do the same test already mentioned.
7. Don't be afraid to admit you don't understand or that something is over your head. I've seen plenty of people that spend double or more firing the parts cannon at their golf cart without success than what my bill for the actual repair was, or cause expensive damage by messing up a repair procedure. Sometimes the DIY route can be more expensive and it's better to just call a reputable shop.
Feel free to add to this list