need ideas, my 520h has a occasional no turn/over issue, sometimes when i get on it turns and starts perfectly, other times when i turn the key there is nothing, no click, nothing, sometimes I'll get a click click click like a dead battery. The times when i turn the key and get nothing, if I have the lights on, when I turn the key to the start position, the lights will dim just a little, then return to full brightness when i release the key. I've replaced the battery with a more powerful one, cleaned battery cables and grounds. I've just looking for a direction to head, I don't want to start just replacing parts. I'm wondering if it might be one of the "safety switches", but I'm thinking its the starter/solenoid. Thanks for any advice!!