Reset button on 1981 vw westy camper

I have a 1981 Westy Camper van, which I love by the way. It has been cold here so a plugged a heater into the interior socket of the van, and then plugged a line from my garage into the van. Well the circuit breaker in the van went out and I cannot figure how to reset it. The manual indicated that it is located near the inside plug........but I cannot for the life of me find a reset button. I would appreciate any help on this. I can send a picture of the manual page if needed.
Thanks......M

hi i have a vw van [camper ] try asking on the club 80-90 forum all about those vans someone will know on there its a uk foroum gut all welcome