Re: Freelander towbar electrics
When I recently fitted my towbar electrics (also plug in kit), it came with a replacement flasher relay that I substituted for the original. The new relay powers the dash trailer tell-tale as well.
If I remember correctly, the flasher relay is second one in from the right in the fuse box located in drivers side glovebox. The uprated one has 4 pins, the standard one, three.
If you didn't get one in your kit, I know you can get one from Land Rover, or possibly Halfords - do a search on here I am sure other people have suggested where the cheapest source is in the past.
Hope this helps.