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Speedo Bulb change

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cbeebies
Barry Sheene
Barry Sheene

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Speedo Bulb change

Post by cbeebies on Tue 14 Oct 2014, 8:44 pm

Well I picked up my first ever CB today and took her for a good shake down to try and learn if she has any niggles...the only one is that the Speedo clock is not illuminating, the rev counter is fine.  Is there a bulb in there, and if so, how do I change it?

Thanks
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Llewelyn1965
the 900
the 900

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Re: Speedo Bulb change

Post by Llewelyn1965 on Tue 14 Oct 2014, 9:32 pm

I'm guessing undo clock housing, locate bulb and replace. Never had to do it yet, but doesn't look too difficult. Have a look at the manual in the workshop area. I'm sure you will get lots of replies from the very experienced guys on here who have done it numerous times though. Smile
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ashcroc
the 900
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Re: Speedo Bulb change

Post by ashcroc on Tue 14 Oct 2014, 10:13 pm

There are several small bulbs inside the housing.  It can also be a sign the common earth on the loom near the headstock needs attention but that's usually combined with the other lights & temp gauge failing.
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eternally_troubled
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Re: Speedo Bulb change

Post by eternally_troubled on Wed 15 Oct 2014, 1:15 pm

It's probably the bulb (assuming the other ones are working). Relatively easy to fix. Mine had very similar issues.
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cbeebies
Barry Sheene
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Re: Speedo Bulb change

Post by cbeebies on Wed 15 Oct 2014, 2:20 pm

OK thanks, but how do I remove the clocks to change the bulb?  Is it the two torx screws underneath behind the headlight??
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eternally_troubled
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Re: Speedo Bulb change

Post by eternally_troubled on Thu 16 Oct 2014, 12:32 pm

I would (assuming you have a CB500 not a CB500S):

* take the headlight off/move it to one side

* undo the speedo cable

* undo the three screws in the rear cover and remove it

* you should now be able to see the back of the clocks plastic assembly, the bulbs are in rubber
holders that poke through - if you pull each one out in turn you should be able to see which are working and which are not (assuming you have the lights switched on!)

Have you got a Haynes manual? There are some pictures of what is involved in the 'electrical' section. There is a link to a pdf of the Haynes manual that is 'sticky' in the workshop section of the forum.
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cbeebies
Barry Sheene
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Re: Speedo Bulb change

Post by cbeebies on Thu 16 Oct 2014, 4:42 pm

Thanks E_T. I took the option of removing the clocks altogether. So just opened the headlight and unplugged the loom. Im going to replace all the bulbs that light the clocks (not doimg the warning lamps). I struggled at first to find the right wattage bulbs but ive treate her to genuine from the dealers, only £3 for 3.

Edit: the little sticker under my seat says its a CB500R but the V5 and HPI just say CB500. Its a 1995 on an N plate.
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eternally_troubled
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Re: Speedo Bulb change

Post by eternally_troubled on Fri 17 Oct 2014, 12:53 pm

@cbeebies wrote:the little sticker under my seat says its a CB500R but the V5 and HPI just say CB500. Its a 1995 on an N plate.

That R is not as in CBR600RR, but CB500 - R, where 'R' is a code to do with years and model revisions.

Look here:



As you can see 'R' means 1993-1995 (approx) - the first version of the CB500.

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