Re: kitchen electric problem
It seems odd that it's all on one circuit, especially the furnace, which is usually on a dedicated circuit. But in 1970, who knows?
I suspect that you actually have two circuits and somehow there's a loose connection on the neutral. Try flipping each circuit breaker in turn and seeing if any of the other breakers affect any of the devices on the "circuit" you mention. If so, then it's probably a problem with the neutral.
You'll want to check every connection you can find -- receptacles, switches, light fixtures, electrical panel -- and make sure the connections are tight. If any connections have a burnt appearance, they must be redone. Replace any burnt switches or receptacles.
WARNING: if you have aluminum wire (silver colored), you should only replace switches and receptacles with ones marked CO/ALR. The ordinary sub-$1 at Home Depot are not rated for use with aluminum wire.
If you do have aluminum wire, I'm sorry. You will continue to have electrical problems. It's bad news; it was commonly installed in that era of mobile homes.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.