Lights blinking
JOHN
We will hope that after this long you have found the problem, but just in case I'll offer a couple of thoughts. Do they blink in a regular pattern as though they were running from a flasher? If so you should be able to find the problem circuit by listening for the flasher. Then try pulling the fuse to that circuit. If it stops, the problem could be either a short, or a missing ground, but in order fot a ground to cause that, you would have to have two problems at once. For that reason, I would look for wires that are either worn through the insulation, or melted together. It sounds like a pretty big short and to run the battery down quickly, it has to be large and also between the battery and any switch.
Hope this is of some help, or better yet that the problem is resolved and you are back on the road. If you read this, come back and let us know.