Gocntry -
If you don't have the printed material that came with your TM (in the blue notebook), you can see the parts layout at the manufacturer's web site. For your unit (same as mine), you can view or download the document here
http://www.rvcomfort.com/pdf_documents/r486_copy8.pdf
I think the capacitor is item 6 in the parts breakout on page 2 of this document.
Bill