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Q: When connecting the battery, positive first then the negative cable I get sparks on 2004 Honda Odyssey

I put in a new starter, connected it the proper way, but when I try to connect the battery I get sparks from the negative cable.
It seems like I have an open wire some where, maybe a connection I missed ? Help!
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If you get major sparks, like welding, the positive wire to the starter may be touching metal somewhere. Look close... most likely it will be at the starter. Maybe the terminal end turned slightly when tightening it.
If the sparks are minor it might be something was left on... headlight, ignition, or something like that.
Be careful.
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