Hi Guys,<br /><br />I recently read in another post that the little hole on the front on the lower unit is a speedo sensor.<br /><br />I have notice a little pipe coming up from the top of the lower unit that was not attached to anything. Im sure it is now safe to assume that this is the pipe coming from it.<br /><br />Question is.. I have a little speedo pickup that trails of of my transom. Can i and should i throw this in the bin and use the pickup from the lower unit?<br /><br />Stan