If it does not even click, but the lights dim, then what you have is a severe battery _connection_ problem. The solenoid itself does not draw all that much current, and should not affect lights at all. If the solenoid clicks, meaning that it has engaged the starting windings, and the lights dim, then it could be the starter itself.
If it doesn't click, and the lights dim, it is NOT THE STARTER! Thoroughly check, and clean, ALL battery cables, including the heavy chassis-to-engine/transmission cable underneath that often is ignored. -- Jim _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com