My truck won't start, it just makes a clicking sound. The battery is charged, the starter and solenoid have been replaced and checked all relays, still nothing. I don't know what to do at this point.
Can someone suggest some troubleshooting steps?
Make sure the battery is actually good--sometimes they can give readings that seem like they're fine, but just not much in the way of CCA there. Best way to troubleshoot for this step: replace the battery, or borrow working battery (friend or mechanic). Second best: hook some cables up to a friend's working battery while running.
Start at the starter. No voltage is getting there. Work backwards. Follow an electrical diagram.