[bestgenman]

Going from memory of an 89 once owned. The only thing that was in the bay below the passenger seat was the squirrel cage fan and the manual air spool valve to run out the generator.

In the rounded corner of the body was a circulating assist pump for the dash heat. It can be seen from laying on the ground and looking up. It was only on when ignition was high and the temp control was towards heat.

Yours may be different from the 89 but that is about it as far as mechanical/electrical equipment in the area you are describing.