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Topic: '71 back-up lights stopped working

in Forum: C3 Electrical


'71 back-up lights stopped working

Posted: 8/9/02 9:16pm Message 1 of 4
Former Member
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RIDGEFIELD, CT - USA
Joined: 6/27/2002
Posts: 262
Vette(s): '71 454 Coupe, Auto, Ontario Orange/Black
Hello All,
My back-up lights have decided to stop working. Bulbs appear to be fine. Where's the best place to begin looking for the problem? I've wiggled & giggled the gear shifter but no obvious short found there. Thanks in advance for the advice! |rollysmile| ~ Joe


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'71 back-up lights stopped working

Posted: 8/20/02 11:49pm Message 2 of 4
Former Member
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moro, IL - USA
Joined: 2/11/2002
Posts: 406
Vette(s): 1979 Black coupe. 11256 original, documented, miles on it when I bought it in April of 2000. It now has 13100 on it. Oyster interior, like new. Everything original, everything works, except the clock. Paint has a couple of minor flaws.
|QUOTE|fun71 said: Hello All,
My back-up lights have decided to stop working. Bulbs appear to be fine. Where's the best place to begin looking for the problem? I've wiggled & giggled the gear shifter but no obvious short found there. Thanks in advance for the advice! |rollysmile| ~ Joe|/QUOTE|



Joe,

The switch for the back up lights is inside the console, on the passenger side of the gearshift. If you take out the passenger side seat, there is only 3 screws holding the side of the console on. You might be able to see if the wire is off, or check to see if you have power in there. i won't guarentee that you can get to everything by just taking off one side, but you might get lucky.
|smile|

Evidently I made a mistake. My switch is inside the console. 71's must be different. |sad|

|UPDATED|8/20/2002 11:49:10 PM|/UPDATED|



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'71 back-up lights stopped working

Posted: 8/20/02 8:08pm Message 3 of 4
Former Member
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Castle Rock, CO - USA
Joined: 4/21/2002
Posts: 179
Vette(s): 1973 T-Top 1993 Coupe
Hi Joe,

The Switch for the backup lights is on the transmission.

If you have a four speed, the switch is activated by the reverse linkage bellcrank via a small link to the switch on the drivers side of the tranny. It is common for the small linkage to lose a keeper and dangle from the bell crank or switch. It is also possible the wire has broken, most commonly at the switch at the solder joint. The wire is actually a pair. Green and black as I remember. There is a connection in the engine compartment that may have come loose, follow it from the tranny up. Rarely the switch is bad. Usually it falls apart before it fails internally but a simple continuity check should verify that.

If you have an automatic, the switch is internal to the tranny. It is the only electrical lead on the tranny but I cannot remember which side. The lead is most commonly the bad item. It is a little harder to verify the switch as it is activated by hydrolic pressure. Best to have a helper and LONG leads to your test meter.

Both switches are "gound side" meaning the test should be for continuity not power.

Alex |hammer|


'71 back-up lights stopped working

Posted: 8/21/02 9:35am Message 4 of 4
Former Member
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RIDGEFIELD, CT - USA
Joined: 6/27/2002
Posts: 262
Vette(s): '71 454 Coupe, Auto, Ontario Orange/Black
Wow!

Now that's what I call an answer! I need to set aside some time to work on this but you can rest assured that I'll have a copy of that post by my side when I do! |thumb|

~ Joe |rollysmile|


in Forum: C3 Electrical


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