SOURCE: Battery want hold charge mechanic advise wiring problem need to know where it could be.
The transmission control unit has gone bad, a very common problem. There is a capacitor in the TCU that goes bad and cause a short on the board. Do not get a used one, they are all bad. A number of people sell rebuilts on Ebay. The TCU is under the Front passengers feet, pull back the carpet and you'll see both the PCM and TCU.
google "accord tcu" or "tcm" if you like
Need more info, just ask
Dave
SOURCE: 1973 HONDA 450 CB
Sounds like time for a new battery. A battery is only good for about two years. Then it starts to loose it's charge quickly and then it will not take a charge. Check the water level in each cell. The water should cover the top of the plates in each cell. No water = no charge. Install a new battery and start the engine. Put a volt Ohmmeter on the terminals as the bike revs to around 2500 rpm. The meter should show 14+ volts. If only 12 or less, the charging system should be checked.
SOURCE: 1983 honda shadow does not get any power... i
We had the same problem, thought it was ignition but found out it was fried connector in juction box, the red and black wires that connect to another set of red black wires but gives juice to the whole box, we pulled them and jumpered together but then had to us small jumper wires to give power back to box, violla took us 3 weeks! :-)
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