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Installing 123 Ignition and Bosch Red Coil 1800 1966

posted by  jeffreybandel on  Sun Oct 21 05:48 CST 2018
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Hello,

I have a 1966 P1800 with a B20B. I have purchased the 123 Distributor and Bosch Red Coil. The coil that is installed has the armored cable. I have access to the + wire inside of cable and I understand that it goes to + on top of the coil. My question is about ground. How was the original coil grounded? Was it via the armored cable?

Jeff








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    Installing 123 Ignition and Bosch Red Coil 1800 1966

    posted by  Ron Kwas on  Mon Oct 22 04:42 CST 2018
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    last visit: Fri Oct 24 04:03 CST 2014
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    Jeffery;

    Ignition coil is mounted to chassis (but this is not a current carrying path) and coil primary is grounded though Ign Points which are the primary coil current carrying path.

    See also: http://www.sw-em.com/Volvo%20Ignition%20from%20Scratch.htm#Vintage%20Volvo%20Ignition%20system%20and%20the%20Armored%20Cable

    Cheers








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      Installing 123 Ignition and Bosch Red Coil 1800 1966

      posted by  jeffreybandel on  Mon Oct 22 04:48 CST 2018
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      Thanks. That is the conclusion I came too as well. It is nice to have confirmation. Now I need to figure out the best way to mount the new coil. Looks like I will have to fabricate a plate to cover the hole.








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    Installing 123 Ignition and Bosch Red Coil 1800 1966

    posted by  derek uk on  Mon Oct 22 04:26 CST 2018
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    last visit: Fri Oct 24 12:33 CST 2014
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    Bosch Red is 1.5 ohm. 123 normally uses 3 ohm so Bosch Blue. Red will overheat I think. BEWARE and check with the 123 guys.







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