Adding LEDs in addition to fog lamps
 

I have a 2008 c300 with stock fog lamps that I want to keep but I also want to add these LED strip lights I bought off amazon. Looks like they need at least 9v, works fine with a 9v battery. How could I splice these in to act as daytime running lights?

Thanks!

Tap power from battery, trigger wire off sidemarkers.

Cool, is there a diagram that would reference this? Thanks!

Here is my take on adding drls

https://cimg9.ibsrv.net/gimg/www.mbw...3c577abfb3.jpg

Got them wired to power up with ignition, and dim with the sidelights.

Adding LEDs in addition to foglamps
 

Hi stilolos, I'd be interested (and so would probably a few of us here!) to hear more about how you did this. Looks really good on your car. Are you able to post more details - or perhaps exchange PMs?

Buy a 12V automotive relay. Wire side marker to post 85, ground 86. Wire battery to post 30, wire post 87 to your DRLs.

http://www.reuk.co.uk/OtherImages/5-...tive-relay.jpg

It's actually quite simple but it took a few attempts to get right. First thing was to get a drl switch with dimming function. About a tenner off eBay. Next was to get 'eagle eye' LEDs , plenty from china, dirt cheap but the first few I got, they somehow wasn't all the same. A few of them worked from 9v onwards and the rest worked with as little as 3v. I had to email a seller to get 20 sent over that were exactly the same. I have 6 fitted to either side, 1 below each driver and passenger door and also 2 more in the boot for extra brightness.

Initially I wanted them to dim with the dipped xenons but I tried it on all the headlight connectors and never got it to work. Eventually I had to splice directly onto one of the eyelid sidelights so they dim automatically. Also I got power from the engine fuse box. Which one I can't quite remember off the top of my head but it wasn't hard.

Because it's all single LEDs, they can be arranged anyway you want. I've had them as triangles, 2 horizontal rows and also 2 diagonal rows but I think I like them as they are now. They fit in the grille mesh perfectly. Hard to get a picture of them clearly.

https://cimg4.ibsrv.net/gimg/www.mbw...12be9fcc19.jpg

Cool
 

Could you please explain this to me like I'm an idiot? I don't understand electronics very well at all and that diagram looks like gibberish to me. I can follow instructions well enough to get the job done but I could still use some help.

It's a 2008 c300 sport sedan and the drls I have work with 9v batteries.

This looks like it would work but if I can wire them up without it I'd rather do that: http://www.newegg.com/Product/Produc...9SIA1J30GZ9882