How to repair a statolounger sofa recliner?

I have a stratolounger 3 piece reclining sofa. The two ends are reclining chairs. The middle part that comes down has a control for heat and massage for both recliners. The control for one recliner works fine. The other control doesn't work at all. I Have a connector that comes out of the sofa and plugs to an adaptor that plugs into the wall outlet. Does this adaptor control both recliners or is there supposed to be another cord and adapter for the other recliner?