May be a simple question--What is the best way to replace the rear turn signal bulbs in the 64 deville convertible. What should be removed to get at the bulbs?

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Comment by Russ Austin on November 28, 2017 at 7:07pm

The lens needs to be removed. Take the reflector out, then the ornament bar, then the lens. The Socket then pulls out.

Comment by tom servas on November 28, 2017 at 7:26pm

TO REMOVE THE LENSE. Do we remove the 2 sets of screws and pry the plastic lense off?

Comment by Jason Edge on November 28, 2017 at 8:05pm

There are 4 sets of screws spanning 8 screws on each tail lamp lens:
- remove 2 screws holding lower red lens to aluminum ornament bar
- remove 2 screws holding ornament bar to ornament bar bracket
- remove 2 screws holding ornament bar bracket to tail lamp fixture
- remove upper and lower tail lamp screws.

Now you can remove the tail lamp lens. When I remove a tail lamp lens, if they do not gently pull away from the gasket by hand, I will trickle WD40 around the perimeter and gently pry the lens away at multiple points with flat screwdrivers. The key word is "gently"! If you just have a go at it with force you will end up contacting me or Russ for a good used lens, or going to the big box stores for a repro.

Here is the Master Parts Book illustration that might be helpful:

Comment by tom servas on November 28, 2017 at 8:18pm

Jason, Thank you so much, just what we needed so we don't start breaking stuff.

Comment by Clovis on November 29, 2017 at 10:43am
Excellent help again. I forgot to order LED backup lights for my car and the diagram just reminded me while looking at it. I have dark tint on the windows and it's hard to see backwards at night.
Comment by tom servas on November 30, 2017 at 10:18am

Jason, Was able to get to the bulbs behind  the taillight lens on both sides-  thx again. Need to check out the grounds next. Getting dim illumination.

Comment by Jason Edge on November 30, 2017 at 11:19am

Tom, run a jumper cable from the tail light fixture to ground and try lights. Better yet, take an external 12 volt source such as a battery charger, extra battery, etc, and attached ground lead directly to light fixture and 12 volts to each contact and look for different in brightness. If different illumination might need to retighten light fixture to rear bumper bolts... they use 9/16" serrated flange head nuts which dig into the rear bumper end bars. Those are in turn mounted to the frame via the large bumper to frame brackets. These usually don't have any grounding issues.
With that said, the #1 culprit for dim tail lights is corroded inner material. A bright shiny inside will make the light appear much, much brighter than a corroded ones. I have seen people spray the insides with the chrome/aluminum paints, line with aluminum foil, and use the wide silver/chrome duct tape available at the big box stores. If you want a nice fixture with good inner material, shoot me an email to

For a visual on what nice stock tail lights with good wiring and nice shiny inside can look like check out my 64 CDV at this video:

Comment by tom servas on November 30, 2017 at 12:23pm

Jason, Thanks or the advice and especially the video. I HAVE A LONG WAYS TO GO WITH THE 64 WE ARE WORKING ON!!!


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IS this normal vacuum

Started by Kim K Kaiser in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 2 hours ago. 22 Replies checking things as i go along,, as i read that altitude is a potential thing, i am at about…Continue

Clovis —Clovis Clovis

Started by Tony and Ginny 429 in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 3 hours ago. 4 Replies

hope all is well I know you live in Canada and could be frozen in a block of ice  PMSL !!enjoy Continue

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Started by Tim Bobeck in For Sale 4 hours ago. 0 Replies‘This is not my car, just sharing .Continue

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