MY LIGHTS ARE PULSATING , WHAT IS CAUSING IT

Hello, I would check on the quality of the alternator installed and the condition of the wiring connector the alternator. I suspect perhaps your replacement alternator may not be doing what it should be. You could also check engine performance to see if the idle speed is too low or rolling, causing the lights to pulsate. Another accessory being driven by your drive belt, such as the air conditioning compressor, could also be causing excessive load and drag on the engine, resulting in an idle roll. Just another thought to look at. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops