Re: Cruise control shuts off when I switch my lights on.
Well, that really is a lot of info, but you neglected the #1 thing we need to know. Has the battery been replaced? That is the #1 cause of electrical gremlins, I would posit that anyone with the original still in their car should just replace it at this point instead of waiting for it to fail. A bad ground cable as previously mentioned could also be an issue, so check it out while you check the battery.
The original white Varta battery is pretty distinctive, do not get another Varta to replace. Just get a good one from a local place like sears or Wallyworld.