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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


No reverse/backup lights

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No reverse/backup lights Empty No reverse/backup lights

Post by KC77Monte Tue Jul 29, 2014 9:15 pm

So it has come to my attention that the old Monte doesn't have any back up lights while in reverse. I have checked the bulbs and they are good. What else can I check to see why these don't work? Thanks...........
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Post by 77mali Tue Jul 29, 2014 9:25 pm

Check the ground wires & connections in the trunk. Although the bulbs seem ok, the connectors they go in might not be- check those wires & connectors for rusted or eroded contact points. Try a little dielectric grease on the ends of the bulbs. Sometimes the grease will act as a "bridge" for the current if connectors are less than healthy.
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Post by BicknellWelding Tue Jul 29, 2014 9:36 pm

Did you try moving the shifter while keeping it in reverse? Mine did that years ago, lights would come on in the right position
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Post by pila Tue Jul 29, 2014 9:46 pm

It's a PIA to swap out the neutral/reverse switch on the top of the lower steering column, but that may be the problem. Of course you can loosen the mounting screws on it to see if it's on the "edge" of working, and just needs moving it a bit...
And maybe wiggle the connector on it may help (?)

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Post by Dinomyte Tue Jul 29, 2014 9:52 pm

If both lights are not working, my money's on the neutral / reverse switch.
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Post by KC77Monte Tue Jul 29, 2014 10:10 pm

Thanks guys. Got a couple of things to try this weekend it looks like.
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Post by 77mali Wed Jul 30, 2014 4:04 pm

Take notes/pics of the wires on the neutral safety switch.  They're not all that hard to replace (albeit a PIA).  

For anyone else reading this that might not know, it's at the bottom of your column by the firewall connection (mine is yellow- maybe it was white once?)
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Post by pila Wed Jul 30, 2014 5:51 pm

Since these cars are all old, the wire colors may be faded etc.  I use some MEK or laquer thinner on them with a rag, to bring out the color if it's questionable.

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