Genuine Volvo UK market 960 S90 V90 Dim-Dip DRL (day running light) relay & resistor. This factory setup which was fitted exclusively in UK market only uses low beam (called dipped beam in UK) headlights as DRL, but voltage is passed through a resistor to dim the lights, hence the name Dim-Dip Pre-wired on all 1996 & later Right Hand Drive cars so very easy to install.

The following photo shows Dim-Dip on the silver car, compared with parking lights on black car in one photo, and regular low beam headlight on black car in another photo.