Is there any way of cleaning up the dingy headlamps or do I have to install new ones? Is there any alternative to the expensive OEM headlamps? Thanks for any help or suggestions.

 

$128.00 is the cheapest I've found so far.
http://www.atozautolights.com/Search...VAN&Trim=Sny5r

I clean mine up like new every so often. I wetsand them first with 600, then 1000, then 1500, then 2000 grit. Then use this stuff on it.
http://www.autozone.com/R,84164/stor...ductDetail.htm

When you're done, they will look brand new.

 

Check with your local Wal-Mart with an automotive center. They have a special deal where they will remove the dinginess for about $40.00. I have not tried it yet myself.