Help. I hate electrics.

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Help. I hate electrics.

Postby Moles » Sun Dec 11, 2016 5:45 pm

Have new coil to fit to my viva. Having trouble understanding the three choices I've been given to wire it up.
1. When used to replace a standard 12v ignition 3 Ohm coil it should be wired as diagram 1
2. When used to replace a Ballast coil with external Ballast resistor use diagram 2
3. When used to replace a Ballast coil system that has built in Ballast wire. Resistor is not used, used diagram 3

My thinking is 3 until I bypass resistor wire then 2. Is this right or am I way off?
Thanks in advance Moles
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Re: Help. I hate electrics.

Postby Fred Dukes » Sun Dec 11, 2016 6:35 pm

If you have an HC the ballast resistor is built into the wiring loom.
If you have an HA or B there is a ballast resistor which goes on one coil connector and the wire from the loom goes on the other end of the resistor.
If you have electronic ignition - HA and B you do away with the ballast resistor on the coil - HC you move the wire on the bulkhead connect from D4 to D5 bypassing the resistance wire in the loom.
The coil you bought - is it "12v" for use with ballast resistor?
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Re: Help. I hate electrics.

Postby Moles » Wed Dec 14, 2016 8:17 pm

I've a Sparkright coil. That comes with a module thing that bypasses points only using them as a switch. I'd post picture but can't get it off my phone
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Re: Help. I hate electrics.

Postby Fred Dukes » Thu Dec 15, 2016 11:00 am

sounds like you need to move the wire D4 to D5 - no doubt someone on here will tell me if its wrong :oops:
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Re: Help. I hate electrics.

Postby 1972nail » Thu Dec 15, 2016 7:38 pm

Editor of the VVOC Magazine ReVival

"When you have a Firenza like mine, who needs any Minis?" copyright David Maxwell 1979.
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Re: Help. I hate electrics.

Postby Moles » Wed Jan 04, 2017 8:44 pm

So coil problem fixed. But while turning over the engine the other day I noticed smoke coming off the cable that runs from starter to solenoid. Poor earth?
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Re: Help. I hate electrics.

Postby droopsnoot » Thu Jan 05, 2017 11:18 am

Possibly poor earth, or possibly poor connections on that cable. Worth checking all of the connections in the starter circuit and earth straps etc.
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