Hmmm..the missus probably reckons I'm quite capable of making a knob of myself without bringing Redarc into it and I've got the shins to prove it
Well this here Redarc hitched up to a 7 pin flat has thrown the cat among the pigeons as I was all set to add 8B&S +ve and earth for the Tekonsha on the Jayco as I've become quite attached to it and if the lad wants to borrow the Jayco their X-Trail is already wired ready to go. I notice the Redarc site price is $374 but they're on ebay for $215 deld but what do they cost supply and fit nowadays?
OTOH since I'm luxuriating in quality brake controllers here I could have an either/or setup if I separate the heavy +ve and earth out of the Tekonsha 7 pin arrangement at present and either handle that with an Anderson or perhaps 12 pin flat. If I keep the Redarc in the 7 pin flat now it fits any standard electric brake setup while I need the 8B&S for the fridge plus feed the Tekonsha as needed.
All the Tekonsha needs to do it's job is a +ve and earth plus brake light switching feed to act like any controller as it passes the +ve and earth on to the brakes. The only peculiarity being the brake light input wire has to be looped to another brake input terminal so the Tekonsha knows its brake and not one indicator input only as US trailers can simply flash the brake lights and not separate indicators. A 12 pin flat socket on the cars and 7 pin and alternative 12 pin plugs wired appropriately on the Jayco should cover both options here. Particularly as I didn't cut the Curt input plug off the Tekonsha but ran it into a Curt socket mounted on the side of the drawbar and the output is another Curt plug and I have spares. This could all be a matter of unplug and plug with a bit of planning.
Back on the Towpro I get the bit about calibrating automatically (just for tarmac?) but if you select manual you dial it in to suit but the controller still acts proportionately at that particular setting (presumably lower for gravel, sand and mud offroad)