Turn Signal and Cancelling System
Turn Signal Switch
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turn signal relay is designed to operate
correctly only when two turn signals (one front and one
rear) and the turn signal indicator light are properly
connected in the circuit, trouble may result from a
burned out bulb, a bulb of incorrect wattage, loose
wiring, as well as from a defect in the relay itself.
general, if the trouble with the circuit is common to
both right and left turn signals, it is probably caused
by a defective turn signal relay, although
may be due
to a bad switch, wiring, or
If the trouble is
with only one side
either right or left
is not at fault since the same relay
used for both sides.
Turn signal trouble
nor left turn signals come on at all:
battery voltage is normal.
-Remove the right
-Unplug the brown lead and relay diode
relay, and use an ohmmeter to check that there is
continuity (close to
ohms) between the relay
If there is no ohmmeter reading, or if
there is several ohms resistance, replace the relay
with a new one.
A. Turn Signal Relay
-Disconnect the relay diode from the orange lead.
Setting an ohmmeter to the x 10
or x 100
range, check the resistance between both rectifier
The resistance should be low in one direction
and more than ten times as much in the other direc-
NOTE: The actual meter reading varies with the meter
used and with the individual rectifier, but, generally
speaking the lower reading should be within the first
third of the scale.