While you wait for answers, we may have found some information which could help you.
Click here for Oven Stove ModelWestinghouse Freestyle electric wall oven 688?
wiring help for Electrolux oven?
Westinghouse 688 wall oven timer?
How to remove a element from a oven?
How can I fix my Thermostat control for Westinghouse model KB251RDM2 ?
how can i fix a fuse?