I used to just dissect factory VW and MBZ delay units are wire them in. It is essentially a powered ground. Once you open the light it is just a small box with which you have to solder a few wires to. 

                     Stacy

                     

Sent from my iPhone

> On Aug 5, 2017, at 7:35 AM, Richard Smith (Smirby) <smirby@GMAIL.COM> wrote:
> 
> Your solution looks elegant, and this one is kind of clunky, but it does have a delay…
> 
> https://www.banggood.com/12V-Car-LED-Running-Light-Relay-Harness-DRL-Controller-OnOff-Switch-p-934191.html?rmmds=cart
> 
> Also from banggood but less ‘kit’ than the one Alistair posted, and without the adjustability/LED readout aspect.
> 
> You could, however, wire it in to the circuit that controls the door lights and tuck it up under the dash. 
> 
> Or, use it for what it is meant for - daytime running lights!
> 
> …r