Dash bulbs

Sean Haas

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What's the most efficient way to get in to replace the instrument bulbs? really just need to replace the white bulbs for the speedo/tach with 4w, current ones are dim. Apologies if this has been discussed but I failed to dig up a thread. Also I guess at some point I would like to remove the speedo to fix the odo which may be more involved, but I might as well ask now.
 

Mike Goble

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The cluster is fairly easy to get out. You remove the speaker grille and speaker from on top of the cluster. Take out the single mounting screw on top. Reach in and unscrew the speedo cable and pull off the two connectors. Tilt the top out and disengage the two cleats that secure the bottom. The cluster should slide right out. The bulbs for the speedo and tach are easily replaced.
 

Sean Haas

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Yeah so here's the thing - I removed the grill earlier thinking I could get in that way, but from what I can tell there is not a speaker under there - there is a hard surface that appears to be molded to the dash, or at least I could not immediately see how it could be removed (I tried gently prying wiht a screwdriver, it didn't budge - there appear to be a couple rivets in it on the sides.) The single large screw you mentioned which I assume goes into the cluster does not let you remove this either.
 

Mike Goble

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Interesting. What year is your car? It seems the cluster is mounted differently on the pre-71 models.
 

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Sean Haas

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June ‘73. If I have time tomorrow I’ll snap a pic. If anyone wants to weigh in who has a ‘73 or after please! I’ll take a closer look at the “rivets”, maybe it’s a weird screw. Otherwise that panel ain’t moving. Thanks for the manual page, that seems to indicate the panel comes out.
 

Christoph

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Right. Not nice, but this happens sometimes. Some cars were delivered without the speaker, then the instrument cover is closed under the grille. Recently seen it on a 75 3.0 L.

You may open the small glove box, reach behind the cluster and unscrew and pull out the speedo cable from there. Possible if the nut on the cable is fastened like it should (not very tightly). Then you can try to tilt the cluster from behind so that the top will come out first. Usually that will not work, nearly impossible to reach there and apply force. Which will leave you to remove the lower part of the instrument panel cover, the one with the push buttons, and tilt the cluster out from below. The two multi-plugs can be pulled off with the cluster out. The (works) wiring is long enough.

Putting a soft cloth over the steering column will protect the cluster's screen and rim which are not very robust. For the same reason, please do not try helping the cluster out with a screwdriver or a hook. A friend suggests to put a little grease on the speedo cable before remounting. He has noticed usually there is none left.
 

Sean Haas

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Got it Christoph, very helpful. This moves this project into the "someday" category as I might as well do everything at once while it's out.
 
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