Mick replied:

Hello Roger, I have had a Hayman Reece Electric Brake controller, same unit fitted to my last 2 4wd's, now about 6 years old, It's worked well, I chose that type because it is electronic and can be mounted at any angle etc. The Tekonsha's are an excellent unit but need to be fitted at the right angle correctly they work on a rolling ball [inertia] system and are bigger in size.
HTH

Mick

John replied:

I use a Tekonsha unit. Worked well on the Magna but when I transferred it to the Gu it was a bit of a bugger. The angle it was fitted on was not quite right so I was constantly adjusting it. Otherwise, a good unit