Rolls- Royce Silver Shadow
B
Bentley
T
Series
Workshop
Manual
The relay box, mounted to the bulkhead in the engine
compartment, contains a printed circuit base to
accommodate 'Lucas' Type
6RA
relays.
Details of these relays, and others used on the
car are given in the Data Table at the end of this
section.
The relays connect through a printed circuit to
loom sockets on the underside of the relay
box.
There are also relays fitted behind the front cover. of
the relay
box
(see Fig.
M59).
Cars not fitted with refrigeration
There are four vacant relay positions on the printed
circuit base (three for cars fitted with refrigeration,
and one for cars fitted with
headlamp dimming).
The relay box also houses a 'Lucas'
RB340
current/voltage regulator, and a regulator condenser
used to reduce radio interference.
The relay box contains the following relays.
On the main printed circuit base
On the main printed circuit base:
Headlamp flashing relay
Horn relay
Headlamp safety relay
Water tap relay
Interior lamps relay
Height control relay
Headlamp dimming relay (fitted to certain early cars)
Behind the front cover
Coolant probe relay
Ignition warning
lamp/Choke relay (except cars
fitted with C.A.V.
aIternators)
Brake pressure (accumulator) relay
Head flick relay (not fitted to cars destined for
U.S.A.
and Canada)
Chapter
M
Section
MI0
RELAYS
Cars fitted with refrigeration
An
alternator replaces the generator. The relay box
houses a
4TR
control
box
(for 'Lucas'
11
AC
alternator) and a warning lamp control unit. On later
cars a
C.A.V.
440
control box is used (for C.A.V.
512
alternator).
The relay
box
contains the following relays.
On the main printed circuit base:
Headlamp flick relay (not fitted to cars destined for
U.S.A.
and Canada)
Horn relay
Headlamp safety relay
FIG.
M59
RELAY
BOX
(REFRIGERATED CARS)
1
4TR
alternator control unit
2
Brake pressure (accumulator) relay
3
Coolant probe relay
4
Ignition warning lamp/choke relay
5
3AW
alternator warning lamp control unit
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