My Grabber lights in the grill are staying on all the time, I swapped out a larger battery yesterday and now the lights stay lit, I have them wired into a toggle switch just like it came from the factory, they were only coming on when the parking/headlights were on but now they want to stay on regardless of the toggle switch, had to disconnect the battery to get them turned off, what's up with them?
Just a thought - The original system used a relay - sounds like that is getting stuck on. You can often tap on a mechanical relay to unstick it but once they go bad they usually stay that way. The original factory relay is inside the drivers side kick panel.
Still no doubt should replace relay, as it'll probably stick again and when you least expect it... Once contacts get a little burned they often weld themselves together, will happen again...