RCT485 SMART LOGIC RELAY - Ring Automotive

RCT485 SMART LOGIC RELAY
The relay’s function
This relay is designed to overcome the problems of fitting towbar electrics to vehicles with
bulb failure warning devices and low or mixed voltage wiring systems (Canbus/Multiplex)
fitted to many newer vehicles.
When wired as below the smart logic relay will draw its power directly from the vehicle’s
battery and switched by the relays.
It draws less than 0.1 amps from the vehicle’s circuits.
by bulb failure warning devices in the vehicle.
This level of current is not detected
The smart logic relay comes complete with a built in indicator warning buzzer, an audible
warning device is mandatory by law.
The relay may also be referred to as Canbus, Multiplex or Smart relay.
Diagram 1
TF2218/7
Smart Logic
1
4
R
6
5+7
2
White
to
chassis
Pink C2 = +12V
For a second buzzer
(Not used in Ireland)
Fuse 7.5 amps
Fuse 7.5 amps
Grey
Black
Red
Brown
Green
Blue
Yellow
Orange
Two power
inputs, each
fused
7.5 or 10 amps
These wires
collect signals
from vehicle
light circuits
Connections and fuse positions in cable from relay to power source
Diagram 2
Relay Relay
Fuse 7.5 amps
Fuse 7.5 amps
Fuse 7.5 amps
Fuse 7.5 amps
Yellow crimp butt connector
or
Male/female
push-on connectors
Main fuse by
power source
15 amps
Main fuse by
power source
15 amps
+12V
+12V
Ring Automotive limited Gelderd Road, Leeds, England LS12 6NA
Tel: +44 (0)113 231 0266 Fax: +44 (0)113 231 0266
Email: autosales@ringautomotive.co.uk Web: www.ringautomotive.co.uk
Ref: L387

Fitting your smart logic relay
1. Route your power source cable(s) from the boot to the power source and fit fuse holders
in line in the cables, as shown in diagram 2. Do not insert a fuse yet
2. Follow the instructions in Chart A and connect your 7-core cable, your relay and the
appropriate wires in the vehicle loom.
Chart A: Wiring the relay(s)
Socket 7 core cable
pin No. colour
1
2
3
4
5
6
7
12S Pin 1
-
Yellow
Blue
White
Green
Brown*
Red
Black*
Aux Yellow
-
to
Relay terminal
number
1
2
-
4
5+7*
6
5+7*
R
+12V (both)
+12V (both)
-
SuperSplice
number/wire
colour
1 - Yellow
2 - Blue
None - White
4 - Green
5 - Brown
6 - Red
7 - Black
Grey wire
-
-
Pink
to
Fuse 2 x 7.5amp
Vehicle circuit
LH flasher
Fog lamp**
Chassis earth
RH flasher
RH tail light *
Brake lights**
LH tail lights*
Reverse
Power +12V
Power +12V
Extra C2 switch (positive)
* Connect thin signal wires black and brown to both the car’s side light circuits, black(LH)
and brown (RH). Connect both black and brown of the 7-core to Terminal 5+7.
** DUAL LAMP FUNCTION: If the stop/tail or fog/tail share a common wire, do not connect
either of the sidelight signal wires (black or brown) from the relay, to the car. The relay will
interpret the signal on the brake signal wire (red) or fog signal wire (blue) and operate the
lights, including the side lights, correctly
3. Connect the trailer reverse light wire to terminal R.
4. Connect the grey wire to the car’s reverse circuit.
5. Connect your power cable to the battery and connect a test board. Insert the fuses and
test the installation by turning the car lights on and off and observing the lights on the test
board.
Ring Automotive limited Gelderd Road, Leeds, England LS12 6NA
Tel: +44 (0)113 231 0266 Fax: +44 (0)113 231 0266
Email: autosales@ringautomotive.co.uk Web: www.ringautomotive.co.uk
Ref: L387