How do turn signals work?

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 ===Front signals work, but rear signals are dead (or vice-versa)===
-#Isolate the two wires on the effected end from the column plug. Using your voltmeter, set to the above parameters, select a side, and measure the wire from the plug. It should show 12 volts (solid or intermittent). If not, you have a switch or harness failure. Inspect, and repair or replace as required.
+#Isolate the two wires on the effected end from the column plug. Using your voltmeter, set to the above parameters, select a side, and measure the wire from the plug. It should show 12 volts (solid or intermittent). If
-#If you have 12 volts, trace the harness rearward (or frontward) until it comes to a plug. Inspect the harness for cut or burned conditions as you go. Repair or replace as needed. If good, inspect the plug(s) for clean proper mating pins, and burned wires.
-#If the plugs look good, go to the lamp buckets, and measure between the socket ground and a known good ground. If it shows 12 volts, you may have an open ground wire. Replace or install a ground from each socket to a hard frame ground, following proper bonding procedures (star washers and burnishing).
+ the socket ground and a known good ground. If it shows 12 volts, you may have an open ground wire. Replace or install a ground from each socket to a hard frame ground, following proper bonding procedures (star washers and burnishing).
 ===Left or right side turn signals dead===

Revision as of 09:02, 19 July 2017