Seriously guys, you can purchase a decent camera from China for a couple bucks and replace it yourself. You can get one that looks close to stock factory kind with better image quality... It is very simple and only a few wires.
The aftermarket kind the dealer fitted is no different to those from China - The better ones from china will use a certain type of chipset which mind you is very cheap but gives really good picture, even in the night.
Once I have more info from my supplier I will post more details of what you should buy.
It is hardly worth complaining to the dealer, they just fit the damn thing. From what I've heard which is nothing new, dealers order from China the cheapest chipset sensors for their camera's for profit reasons.
Below is the email extract from a China vendor who I deal with and are reliable.
The following is the price of different chipset:
The price of PC-1030 is $10. PC-3030 is $12. MT9V136 is $15 and PC-1089 is $16. - excluding shipment.
The different of them is the resolution rate. The PC-1089 is highest resolution. But All of them have good quality.
Tiffany Zeng/Oversea sales
ShenZhen DT Electronics Co, Ltd.
Add: Floor 5th, Xunda Industrial Park,Xia Wei Yuan,Gushu,Xixiang,Baoan District ,Shenzhen ,China