250k miles. When start it sometimes none of the elec. stuff will work on 1991 Volvo 740

250k runs fine but when i start it sometimes none os the elect. Stuff work (wipers, lights ,windos,blower fan) and if i turn it off some time it wont start up or even turnover at all. But if i wait a few min. It will start up like theres nothing wrong at all. Could this be a brain pob. And if so how much mite that cost.

Asked by for the 1991 Volvo 740