"its a ryder unit, which is what i use when fitting towbars
if you look at the unit itself it says which each colour is and where it needs to conect to
wire the unit behind the right hand lamp, run a wire to the left hand for the indicator and to the left hand sidelight
left hand indicator: grey/blue or green/blue (just check with test light) this goes to yellow wire on the relay
right hand indicator: black/green this goes to the green wire on the relay
brake light: black/red this goes to the red wire on the relay
fog light: grey/white this goes to the blue wire on the relay
left side light: grey/black this goes to the black wire on the relay
right side light: grey/red (only wire left apart from brown, just test if its not grey/red) this goes to the brown wire on the relay
reverse: blue/red this goes to the grey wire on the relay*
* reverse is only used if fitting twin electrics or 13pin socket
if there is 2 grey wires on the relay 1 goes to reverse and the other goes to earth, doesnt mater which grey wire does what, if theres only 1 grey wire, it goes to the reverse light
white wire on the relay goes to earth (body)
youll also need to power the relay, i take a feed from the rear cig light as its rated at 30 amps, but fit an inline fuse, 15amp inbetween the relay and the cig lighter wire, the live is the red wire or red/white from memory, not brown. the live feed goes into any of the + ports (choice of 2)
the wires from the towing socket go into the relay ports which tell you which colour to put where, the white wire goes to earth (body)."
