There is really no room on the 06's. That damn air pump line runs right beside the galley plug. Behind the alternator was 100% easier.
Oh and to answer your question about the autometer part #, I didn't need and additional parts because the Defi sender has 1/8 BSPT thread just like the factory galley plug. If your sender has 1/8 NPT thread you will need a 1/8BSPT male ----->1/8 NPT female adapter