If the headlights flash on and off, there may be a problem with the bulbs or fuses. There may also be a problem with the battery connections or wiring.
I dont know about a regal limited but I have a 1992 buick regal gran sport 3.8 liter engine if your standing in front of the car look on the left side of the engine you will see the power steering pump it is under the pump you have to shine a flash light down the firewall to see it and can only get to it from under the car.
under the steering wheel you have to take the how thing apart and its a round thing p.s. its connected to the turn signal lever
TRY CHECKING TO SEE IF YOU HAVE A HIGH BEAM HEADLIGHT OUT. tHIS WILL CAUSE THE PROBLEM YOU HAVE.
You could be hitting the flash feature on the turn signal arm when you use it.
you've got a short or a bad fuse
you probly have loose light bulbs
No this is a myth and what dumb question
because you turn them on and off, on and off...
A mis-wiring or short circuit somewhere between the controls, fusebox and lights.
If the check engine light does not flash when in the diag mode, the problem is the computer. Could be as simple as a failed lamp driver but a failed computer is toast and will need to be replaced/
Headlights have a thermal circuit breaker. A short to the headlight (positive to ground) will cause the breaker to trip. The breaker cools and the lights come back on till the breaker heats up. Find the short and fix it.
Flash your high beams once or twice quickly