Overdrive Switch; Tachometer; Spot Lamp Feed; Oil Pressure Gauge - Suffolk SS100 Build Manual

SS100 Build Manual (Export Edition)

9.1.22 Overdrive switch

The last standard dashboard switch is for overdrive.
Overdrive switch
st
1 Terminal
nd
2 Terminal

9.1.23 Tachometer

There are two types of tachometer, induction type need the coil positive wire run through the tachometer, If
you have this type locate the White/Green at the steering ignition key and run this wire through the
tachometer. Others like the type supplied by Suffolk Sportscars only need a trigger wire from coil negative.
The below wiring is for a Suffolk Sportscars supplied gauge, please contact Suffolk Sportscars for help
wiring up other types of gauge.
Tachometer
Green
Black
Red/Blue
Brown/Grey
Red/White
White/Black

9.1.24 Spot lamp feed

Also in this area is the spot lamp control feed, this can be wired through a standard on/off switch or through
a standard four pin relay so they come on and off with main beam.
Spot lamp switch
st
1 Terminal
nd
2 Terminal
Spot lamp relay
85
86
87
30

9.1.25 Oil pressure gauge

If using an electric gauge extend wires to reach wires in section 12 above, if using Suffolk Sportscars
supplied mechanical gauge the capillary tube needs to be fed through the dashboard hole, across the roll
hoop and through the bulkhead to the engine, make sure the tube is not kinked or able to jam in any moving
parts. Two adaptors will be supplied with the gauge, the larger steel adaptor needs to be fitted into the oil
supply in the engine block using a copper washer to seal, on the right side of the engine you will find a row
of six blanks just above where the block meets sump, any one of these blanks can be removed to fit the steel
adaptor.
Into the steel adaptor you need to fit the brass adaptor, this needs to be fitted with the flat end into the steel
adaptor, the other end of the brass adaptor has a raised centre to hold a small fibre washer which needs fitting
before connecting on the oil pressure pipe. The gauge end also needs a fibre washer fitting before connecting
the gauge.
Loom wires
Yellow/Blue
Yellow/Green
Loom wires
Green
Black
Yellow/Black
Not used, insulate
Not used, insulate
Not used, insulate
Loom wires
Brown
Blue/Pink
Loom wires
Blue/White
Black
Brown
Blue/Pink
Power
+12v input from overdrive inhibit switch
+12v output to overdrive relay
Power
+12v input from ignition
-12v Chassis earth
-12v Trigger from coil
Power
+12v Live input
+12v output to spotlamp/s
Power
+12v trigger from main beam feed at stalk or warning lamp
-12v Chassis earth
+12v live input
+12v to spotlamp/s
Page 57
Rev 10 November 2013