Specifications

32
87
85
86
30
87
85
86
87a
30
87
85
86
87
30
87b
85
86
87
30
o
o
o
o
30
86
85
87
o
o
o
o
30
86
85
87
o
87a
o
o
o
o
86
30
85
87
o
87
o
o
o
o
86
30
85
87
o
87b
Normally Open
Single Pole
Single Throw
Single Pole
Double Throw
with Normally Open
and Normally Closed
Contacts
Normally Open
Single Pole
Single Throw
with Two Joined
Outputs
Normally Open
Single Pole
Single Throw
with Two Separate
Outputs
RELAY TYPES
When making connections to the relay itself,
always use covered crimp terminals
-
do not solder directly to the pins. If the relay becomes faulty and needs to be
replaced you will have a time consuming job on your hands. Do not wind tape tightly
around the pins in an attempt to hide the relay, as th
is may put pressure on the pins
on the inside of the relay and cause an intermittent fault.
Applications for the use of relays include; adding a door lock solenoid to a vehicle
that doesn’t have one in the driver’s door; popping open a boot lid via a boot
release solenoid using the auxiliary output from the alarm; adding horn honk to an
alarm when the siren sounds to give a greater sound; flashing independent park light
or indicator circuits; creating two auxiliary outputs from only one; controlling window
or sunroof closures etc. The possibilities are only limited by your imagination.
DIODES
What is a diode?
-
Simply, a diode is a valve which allows current to only flow in
one direction. Like relays, they can help solve a vast number of installation
cha
llenges and should always be carried in an installer’s bag of tricks.
A diode will allow a positive voltage to travel from the
anode
to the
cathode
. It will
not allow a positive voltage to travel from the cathode to the anode. When working
with a negative
signal the diode works in reverse. Remember that the stripe on a
diode marks the cathode or negative side.