TF2218/7H Smart Bypass
Relays
Fitting Guide
PLEASE READ INSTRUCTIONs BEFORE FITTING
Route your power source cable(s) from the relay to the vehicle fusebox using a PowerTap
connector (TV1645-1 or TV1645-2- not included) DO NOT insert the (15amp) fuse yet.
Connect the 7 core cable from the trailer socket to the relay as per diagram and the appropriate
wires from the relay to the vehicle loom. Insert a 15amp fuse at the power source and connect a
test board to the socket. Test the installation by turning the car lights on and off and observing the
lights on the test board.
Connect thin signal wires Black and Brown to both the vehicle’s side light circuits, Black (LH) and
Brown (RH)
IMPORTANT! Dual lamp function: If brake light and tail light or fog light and tail light share a
common wire do not connect either of the side light 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.
FORD TRANSIT INSTALLATION When fitting the relay to a Ford Transit or in similar condensationprone environments, we recommend putting a coating of grease/sealer over exposed terminals.
WIRING GUIDE
Screw
terminals
are for
connecting
the trailer
socket
wires
All other
connections
are made
with the
plug-in
loom
2
Foglight
LH & RH Tail 5+7
6
Stops
Reverse** R
RH flasher 4
LH Flasher 1
Trailer socket cable
White wires
to chassis
** The reverse connection
is used only when a 12S
(grey caravan socket)
or 13-pin socket is fitted
TF2218/7E
Smart Logic
Trailer
socket
Fuse 10 amps
Fuse 10 amps
Loom
plug
Two orange power inputs with fuseholders for 10 amp fuses.
Fuse also at source (15amps)
To vehicle loom
Grey
Black
Red
Brown
Green
Blue
Yellow
Reverse** (12S [grey caravan socket] or 13-pin)
LH tail
Brakes
RH tail
RH flasher
Foglight
LH Flasher
Pink C2 = 0V
For a second buzzer
(Not required in Ireland)
How to connect if you use a single power cable through the vehicle
Fuse 10 amps
Fuse 10 amps
+12V
Blue crimp
butt connector
Main fuse, by power source, 15 amps.
This fuse is vital to protect the running cable
NOTE:
One fuse protects: Stop lights; RH tail light; LH tail light
The other protects LH flasher; RH flasher; Reverse; Fog AND will switch off all circuits if it fails
Quality – Service – Innovation
Alvanley House, Alvanley Industrial Estate, Stockport Road East, Bredbury, Stockport, SK6 2DJ 0161 430 1120 (fax 0161 430 8140)
www.rydertowing.co.uk ryder.towing@btconnect.com )