E-code city light wiring question
 

I saw Mark P's write-up and it mentions the yellow wire that needs to be purchased to wire the city lights to the stock harness. I assume this needs to be repeated on both sides?

ECS has the wire for $2 each, so that means I need to purchase four? Two for each side?

<img src="http://www.ecstuning.com/stage/images/product/iadmin/3051_x600.jpg">

<a href="http://www.ecstuning.com/stage/edpd/pagebuild_v2.cgi?make=Audi&engine=&model=B5%20S4&s ubmodel=&category=Lighting">Yellow wire</a>

It's only 1 yellow wire to each city light. So, you only need 2 all together.

yup - I only used 2/ea for the custom switching that I did
 

Actually, I think the way these wires started out is that they have the clip at both ends. I had a total of two of those wires (total of 4 ends), and then cut them in half to end up with 4 wires that had one clip on each. ECS may sell them already cut, where as when I got mine they had clips at both ends.

Which bulb fires for the city light effect? Is it the main bulb at reduced intensity?

No, there's an additional low wattage bulb in the Euro housing