1) What is better, the thin or full size ballast?

Full size will be just fine, and seem to be slightly cheaper.

2) Do I need the error code eliminator for my 2004 grand prix gt2

No, you should have no issues with that problem

3) I know that I will be staying with the 35watt for my 898 fog light kit but should I use the same 35watt bulb or can I bump it up the 55 watt for my lows (9006) in factory housings? Or will it be to Hot?

You can run 55W if you wish to. I've ran them before with zero issues.

4) As for Color - I am so torn between buying the 5000k and 6000k sets. I want clear white light (absolutely no yellow) but the rep at DDM is trying to steer me away from the 5000k as he said that no two bulbs are guaranteed to look the same at 5000k since they are in the middle of the spectrum. He said that I may get one that is just slightly yellow and one slightly blue or clear as stated.

To be honest, if you buy a cheaper a cheaper brand you won't be guaranteed a correct match. Cheaper usually means cheaper craftsman ship, and depending on the bulb and power supplied depends on the lighting mostly. 5000k or 6000k, personally I would go with 5000k.

5) Do I need any additional wiring harnesses or mounting brackets to do an install?

Most kits comes with the required wiring, thus plug and play. A relay harness is highly suggested as it will supply true power to the ballasts, and prevent frying stock wiring. Mounting brackets, some supply them, some don't. There is no sense of going out of the way to buy them, when you can either zip tie or double sided tape them.

6) Will the 881 kit fit my 898 fog light housing?

Yes, all 800 series bulbs have the same base.

7) Which brand is worth the money?

DDM carries a lifetime warranty. VVME I beleive has a one year. I have heard both bad and really good about both companies. I run Morimoto, and have great luck but at a higher price. Morimoto is what TRS carries.


In my personal experience, retrofitting stock headlights is the best option to go. Of course it takes some time, and a little more money, but the outcome and benefit is worth it. Instead of a scattered light output, retrofits concentrate the light in the best usable forward output. Not only this, it also doesn't blind oncoming traffic that could potential wreck, and you would be at fault or hit you. There is a new write up from Drunkie that does a good job at going through the process of doing a retrofit. I just did my second set in eight hours this past weekend. Plus depending on local laws, open bulb HIDs can be illegal as well. That is just some food for thought.