Rear lights always on when battery is connected. This car also has a parasitic drain. I thought I would start with a grounding strap. Any other suggestions to look into? It's rear side markers and lights. Front are off. If I pull relay 3 from the trunk fuse box of course lights go out. Any suggestions would be appreciated.

 

You just joined the Forum and this is is your first post. I noted that your Public Profile says nothing about your car, but based on your screen name I presume it's a 2003 XKR. If so, you're in the wrong Forum. This is the X150 Forum, for aluminum-bodied XK/XKR models from 2007 to 2015.

Your 2003 is a steel-body X100.

 

Yeah it's an 03 posted this there disregard. Thanks for the heads up.