My seat warmers will not get warm. the seats get power. is there anyway to replace the coils? are a way to test the coils? my Haynes is useless in this area.

See if there is some diagnostic info in the FSM.

 

http://www.main.experiencetherave.com/subaru_manual_scans/1997_Legacy_FSM/

Replacement requires removal of the seat cover. Not difficult but you need hog ring pliers to put the cover back on. Might be able to get them at Lowes or something, I'm not sure.

 

The heating pad will probably cost a pretty penny. I'd try all the diagnostic steps in the manual before replacing the pad.