Chevrolet Tracker Alternator Not Charging

I Have Change My Alternator 3 Days Ago! I Drove It To Town And It Drain The Battery Had To Be Towed Home. So I Clean All My Ground Wires And...

For The Last 6 Months I Noticed That When I Start My Vehicle My Head Lights & Dash Lights Brighten Up After About 10 Seconds & Start To...