Spark when I plug in the rectifier...

Discussion in 'Tech Area' started by Waveraider, Apr 25, 2012.

  1. Waveraider

    Waveraider Member

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    I have what I believe is a K3 CT70, S/N 2312224. Build date is 10/73.

    Anyway, I bought a new ignition switch and wiring harness from Dratv. Plugged in everthing and it started first kick, but several minutes later I noticed the rectifer (i think, the small two pronged chip) was very hot. I unplugged everything, but the ignition switch and the battery connertor, whitch is the original.

    I noticed every time i plug in the rectifier, I get a spark from the cnnectors. Is there a chance I have a bad rectifier? I thought a diode or resistor would blow and open the circut.
     
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  3. Adam-NLV

    Adam-NLV Well-Known Member

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    Interesting serial no.

    My Ct70 frame serial is 230 1928 5/73
    From that 5 month span they made 19,296 K3's or 2059 per month!

    I take it you have a 12v aftermarket motor? You didn't say. The rectifier/reg shouldn't be getting that hot. the spark from the connector could mean it's seeing a short but more info is needed. you should re-check the electrical continuity of the old ignition switch vrs the new one.
     
  4. Waveraider

    Waveraider Member

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    I have a 6v motor, and the bike was missing the ignition switch when I bought it. The original harness is FUBAR, and I can't really make heads or tails of it.
     
    #3 Waveraider, Apr 26, 2012
    Last edited: Apr 26, 2012
  5. Waveraider

    Waveraider Member

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    OK. I brought home my volt meter from my boat and checked voltage at the rectifier terminals. +to+ and -to - read neg 5 volts. Keep in mind, I cut the terminals off of an old battery to install on a new one. I reversed the connections on the battery. The bike still runs, but rectifier is not getting hot. I know I hooked it up right originally, but why would this happen?

    Update: I just checked if it's charging and while running it shows 7v at the battery. I wonder if my harness is defective?
     
    #4 Waveraider, Apr 26, 2012
    Last edited: Apr 26, 2012

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