Need HELP 91 E300TE 4matic
 

I am having problems starting my car finnaly started and noticed that when ever I wiggle my +battery terminal wire it makes something click even when the car key is not in the ignition. Is this a voltage regulator or any other ideas would be very helpful. THank you for any help in andvance.

George :(

Battery terminal contact problems at the battery post account for the majority of high-current problems. A first step should always be to use a battery post/clamp cleaning tool to make the sufaces shiny, then re-attach. Remove negative clamp first, replace it last. Battery post itself could also have broken internally, so replacing battery could be necessary if post cleaning doesn't solve the 'wiggle' issue.

Steve