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Author Topic: V7C ignition  (Read 2122 times)

Offline rbond

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V7C ignition
« on: January 07, 2016, 01:05:25 PM »
I would like to replace the sparkplug wires and caps. What is the length and what type connectors go on the coil ends? I am planning on using non-resistor wire and caps, with squeeze on type terminals on caps. Don't care for the screw on, found the left one slightly loose at a service, was not impressed.
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2012 MG V7C
1976 Suzuki GT500A
1978 Suzuki GS400C (long gone)
1973 Suzuki TS 100K (first new bike)
1969 Honda S90 (very first bike)

Offline drlapo

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Re: V7C ignition
« Reply #1 on: January 07, 2016, 01:26:46 PM »
Electronic ignition and tach?
You may need to use resister caps
Probably5000 ohm
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Offline rbond

  • Gosling
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Re: V7C ignition
« Reply #2 on: January 07, 2016, 03:03:14 PM »
Why? To the best of my knowledge, resistor plugs, etc.  are for RF suppression so as not to 'buzz' car radios. Since the vast majority listen to FM not AM, that should not be a problem.?
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2012 MG V7C
1976 Suzuki GT500A
1978 Suzuki GS400C (long gone)
1973 Suzuki TS 100K (first new bike)
1969 Honda S90 (very first bike)

Offline malik

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Re: V7C ignition
« Reply #3 on: January 07, 2016, 05:05:53 PM »
I believe the recommended combination is ANY TWO OF resistor plug, resistor caps & resistor wire. Not all three. Those who know why can chime in, please. My previous guru on this is no longer with us.

Mal
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2010 V7 Classic, 2014 V7 Special
1996 1100 Sport Carb (in NZ), 2004 V11 LeMans (in UK)
Carberry Enfield V-Twin, 2008 Royal Enfield Electra, 2006 RE Electra 535

Offline Kiwi_Roy

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Re: V7C ignition
« Reply #4 on: January 07, 2016, 05:23:29 PM »
Quote from: malik on January 07, 2016, 05:05:53 PM
I believe the recommended combination is ANY TWO OF resistor plug, resistor caps & resistor wire. Not all three. Those who know why can chime in, please. My previous guru on this is no longer with us.

Mal
That sounds reasonable, it's standard to have a suppressor these days, to leave it out altogether may overload the coils.
Roy
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17 V7III Special
76 Convert

Moto Guzzi - making electricians out of riders since 1921

Offline drlapo

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Re: V7C ignition
« Reply #5 on: January 07, 2016, 06:57:22 PM »
my 85 BMW R80 came with resister caps
when I "upgraded" I replaced them with non resister caps and the tach went nuts
I installed 5000 ohm NGK caps and everything returned to normal
I don't know why but some electronic systems require resisters
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