2000 Astro w/155,000
what will cause the lights to flicker? Dash lights, radio lights and headlights.
I replaced the alternator about 18 months ago.
Thanks

 

A lose connection some where in the system ??/ it could be either on the charge side or the ground side ??/ The easy way I found to find it ( There's really no easy way) is with the vehicle in the mooed Watch the sign's, grab a probable wire in the system one wire at a time and hold it taunt as to pull on it close to the connection so the contact at the connection dose not have any room for error (gap) that's the fastest, The other would be isolate each wire??/ Time consuming and its still a trial and air method??/ Does this happen whither the car is running or not??/ Look for corrosion or possibly burn or frade insulation next to the connection Start at the light relay first??/ Maybe a faulty light relay ??/