FollowupID: 680570 Submitted:
Saturday, Mar 27, 2010 at 20:02
Member - Jeremy W (SA) posted:
Thanks for the reply.
Here's the whole story:-
The brake controller has 4 wires:
1. Blue - goes to the brake via the trailer plug - no probs on this
2. White - to earth - no probs on this either.
3. Red goes to the brake switch - Here's the problem.
4. Black goes to +12V = no problem here.
So you get the signal (red wire) from the tail light itself OK. Now I take it that the wire goes to 12V when the brake light goes on (of course, the other side is 0V!!). Right! I guess that this is the same as connecting it to the brake switch.
OK now I understand.
Cheers and Beers,