Recently I've been detailing my newly purchased 05 Roadster Ltd. Today I finished the interior and put the top back up to vacuum the trunk. I noticed a 5" diameter hole in the back of the passenger/trunk compartment bulkhead that is open and has 2 electrical plug-ins. This hole is slightly to the driver's side and appears to have had a cover that is now missing. Are the connections for the gas tank senders? Thanks...Newbie Jim