I recently experienced a breakdown and tow-in when I started getting erratically blinking dash warning lights, then hesitation, bucking. Pulled over, shut down. No battery left to start although interior lights were OK. Replaced alternator and battery. Now I randomly get rapidly blinking brake and battery lights with no other effect. This is at any speed. I noticed this afternoon that the lights went solid when I used and held the brakes. My local garage is mystified and at a loss. So am I. Any suggestions appreciated. Thanks.