|Reproduction of the Lucas SSB300 hazard switch assembly. Model type 155, part no 54006501, also marketed by Unipart as GSS159.
Can be fitted under dash using bracket or discard bracket and direct install to dash.
your car has flashers but no hazard warning facility this Kit provides
everything you need to add this very desirable safety feature to your
car. It includes both the Switch and the Flasher Unit. There is a
warning light in the knob which is illuminated when on. It comes with a
bracket for under dash mounting, but can also be mounted direct to a
metal dashboard. - See more at:
for owners of classic vehicles without hazards who wish to intall a
discreet and period hazard switch for improved safety.
Suits all 12V positive or negative earth vehicles with existing indicators.
Mounting & Wiring Instructions: SFB 300
The following instructions are for guidance only. If you are not sure
what you are doing, refer to an auto electrician. A short circuit can
cause a fire, injury or both.
The device MUST be mounted where the warning light can be clearly seen by the driver.
The device can be mounted under the dashboard or on the steering column.
If the dashboard is no thicker than 1.5mm (ie a metal dashboard) it can
be mounted directly to it by drilling a 15 mm hole and discarding the
The flasher unit should be mounted adjacent to the switch using the spring clip.
If possible, mount the device so that the wires from it can reach the
wires to which they need to be connected. If this is not possible,
lengthen the wires by using connectors, such as insulated male and
female Lucar connectors. Do not twist and tape up the ends.
1. Connect the PURPLE wire to a suitable, unswitched point or directly from the battery.
2. Cut the wire that goes from the ignition switch to the live terminal
(usually marked ‘’B’’) on the existing flasher unit. This terminal is
live only when the ignition key is ON.
3. Connect the GREEN/PURPLE wire to the wire you have just cut, coming from the ignition switch and the other GREEN/YELLOW wire to the cut end going to the flasher unit. Use the Lucar connections and make sure these are well insulated.
4. Connect the GREEN/WHITE wire that goes from the direction
indicator switch to the RIGHT HAND flasher lamp circuit, using a snap
lock automotive cable connector.
5. Connect the GREEN wire that goes from the direction indicator
switch to the LEFT HAND flasher lamps circuit, using a snap lock
(self-stripping wire connector) automotive cable connector.
6. The GREEN/WHITE and GREEN wires are interchangeable and it is not important which circuit, left or right each is connected to.
7. The BLACK wire should be connected to ground (carbody/earth).
The Hazard Warning Unit has two unused terminals. These are for a
vehicle which is fitted with a trailer socket and should be connected to
the number 5 terminal and number 6 terminal on the socket. However a
qualified electrician should be consulted for these connections as some
other wires on the trailer may have to be reconnected.
Thanks to: MGAguru