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Discussion Starter #1
Hi all,

Yesterday my odometer was working fine except the backlight was blown. Then we had the battery replaced and now the odometer is blank. Completely blank. Any ideas?

Everything else on the dashboard works. The radio works. Just the odometer.

Thanks!
Terry
 

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Found an interesting idea while Googling and it said to remove the Positive battery connector (be very careful not to short anything out while doing that) for a minute and then put it back on (again being very careful not to short anything out). This had something to do with a capacitor. No cost to try, but just remember that it is very easy to short your wrench to something while doing it and causing more problems. If you try this, make sure you have your radio code, etc.
Buffalo4
http://www.rx7club.com/3rd-generati...iguring-out-how-fix-fd-odometer-599220/page3/
Post #61

Also check here:
http://diy-auto-repair.wonderhowto....p-starting-replacing-vehicles-battery-396576/
 

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Another safer way to do it is to disconnect both battery connectors and hold them (the connectors with vise grips or similar) together for around a minute to discharge any 'black' voltage (basically discharges all the capacitors) and then reconnect them. Remember to always to remove the Neg battery connector first and always replace it last.
Buffalo4

http://answers.yahoo.com/question/index?qid=20100902224508AARdejE
 

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Discussion Starter #4
well the easiest thing to try was to remove the black ground wire from the battery, then the red positive wire from the battery (remember black ground first).

then I tried to clamp them together but they would not reach... so I used a jumper wire and some clamps. Now gotta wait 15 minutes.

I suspect that the act of installing the new battery caused a spark which blew something (weak?) in the dashboard circuitry related to the odometer.

if this does not work, I will have to disassemble the dashboard and check the cables....

Thanks buf4!
terry
 

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Discussion Starter #5
holy cow buffalo4...it worked! the odometer is now working! and I only waited 5 minutes :)

thanks zillion!
terry
 

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Discussion Starter #6
save the backlight for another day...we've been living without it for years...whats another 6 month :)
 

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Great to hear it worked. :)
It really does sound like draining (discharging) a capacitor does the job. :D
Buffalo4
PS: You can probably find something on youtube to fix your backlight problem.
 
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