its 94 e420

That would be a 38 pin connector - in the black box where the battery would normally be if it weren't in the trunk. More info here - http://www.peachparts.com/shopforum/showthread.php?t=107630
You don't need the banana plugs, too big for that connector. Any wire of about 20 gauge will work fine.

thanks deanyel for the info this will save money. i'am not like my brother takes his to the mb shop and pays out of the ying yang