Originally Posted by Mol
A heat gun or map torch won't completely destroy your trim pieces, if you don't lack all common sense.
The OP asked for a solution that didn't look like ****, I suggested one.
Roll your eyes some more, all the way to your industrial sized vat of tire shine. ****ing JK owners
Ratmonkey and Mol are right, you can throw any amount of money at a problem, using snake oil to try to fix something or have common sense and do it right. Unfortunately, common sense isn't all that common. Personally, I'm a firm believer in prevention rather than cure - if sun damages trim where you live, apply some sort of prevention to stop it from happening. If the damage is done, there's only so many ways to fix it properly (without continuously applying $20 bottles of cream to it every couple of months).
To the OP: we don't have heavy sunlight to fade our plastics where I live, so I can't comment on the plastic restoring products. If you want to go with the plastic restorers, I'd do some research on the net and canvas the forums like you're doing now. Ratmonkey suggested a repair technique that works great with care and common sense!
You could also seek out some spare new parts on the forums, online, or at the dealership and just swap out the parts with new. If you keep spending money on restoration products that look like crap, or you have to reapply - then it might be worth it in the long run to just go and buy new.
As for me, I agree with WilyWillie - I prefer a good coat of mud and grease opposed to trim/tire shine. Each to their own.