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Wired correct, but no juice on negative side of coil


 
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Davebr
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Joined: 22 Nov 2002
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PostPosted: Fri Aug 10, 2007 11:34 pm    Post subject: Wired correct, but no juice on negative side of coil Reply to specific post Reply with quote

Guys I am rewiring my side mount 8N. It is converted to alternator (3 wire). 6 volt coil. The is a diode off the number one spade and I am using a resistor to reduce voltage to coil. I have juice everywhere except on the negative side of coil and to the distributor? It is wired exactly like the diagram????? I am just not getting any spark?????

Any help would be appreciated.

Thanks,

Dave
 
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Dell (WA)
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PostPosted: Sat Aug 11, 2007 12:48 am    Post subject: Re: Wired correct, but no juice on negative side of coil Reply to specific post Reply with quote

Dave........I really recommend using a real 12-volt roundcan ignition coil like the NAPA IC14-SB ($15, cheap) that uses NO RESISTORS and produces "hotter sparkies" than the OEM 6-volt roundcan coil. Its so much simpler to install for a 12-volt sidemount conversion.

As to why you have "no juice". You've shorted the wire from the coil negative down to the points feed-thru at the side of the distributor body. You doubt? Disconnect the points feed-thru and you'll gitt yer juice.

Unlike the squarecan frontmount coil, the roundcan ignition coil is generally fairly "bullet-proof" and you haven't hurt it. Your points may be shorted to ground inside yer distributor, but I'd bet on the plastic insulative washer that is part of the "feed-thru"........Dell, yer self-appointed sparkie-meister
 
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Davebr
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PostPosted: Sat Aug 11, 2007 6:10 am    Post subject: Re: Wired correct, but no juice on negative side of coil Reply to specific post Reply with quote

Thank you Dell. Nice to here from you. I will let you know, but I am almost 101 % sure you are correct. Just to be 100% clear, if I put the 12 volt coil on, I can take the resistor off completely and just wire straight from the coil to the terminal block?

Dave
 
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ZANE
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PostPosted: Sat Aug 11, 2007 7:15 am    Post subject: Re: Wired correct, but no juice on negative side of coil Reply to specific post Reply with quote

If the points are closed you won't get any voltage reading at the negative or distributor lug of the coil.

Zane
 
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Davebr
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PostPosted: Sat Aug 11, 2007 1:12 pm    Post subject: Re: Wired correct, but no juice on negative side of coil Reply to specific post Reply with quote

Thanks Dell and Zane. I got it. It was a short in the distributor.

Dave
 
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