Negative supply

[Ollie boy]

Hi 

I'm new to group so hope you all bear with me 

I'm going to fit running lights to my x3 using a relay that I have had before and found very good . The problem I have is that the relay connects straight to be battery, that's ok for the positive as supply can be found under bonnet but I need a negative too , that's where I'm stuck😥

[Bimmer Owners' Club]

Hi Richard...welcome to the Forum!

I'm not sure but if you run a multimeter around the car, I'm sure there must be something local to where you want to locate the lamps.

Let us know how you get on with it

Regards   Trevor

[Greydog]

On the X5 all negative/Earth connections are Brown. I would run a single fused live to each running light and pick up a local earth connection to save running tow cables. When i did my angel eyes as running lights I used the headlamp earth wire to tap into.

Hope that helps

[Bimmer Owners' Club]

Thanks Greydog