Volvo RWD 120-130 Forum

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Purpose of additional circuit 120-130

Paul;

The additional circuit does just exactly what the name inverter says...it inverts the points opening signal to a points closed signal and vice versa...because the Bosch module is designed to trigger and put out a spark upon input trigger (magnetic/optical) closing condition...I expect that is why your "timing is off enough that the car wouldn't start." without it...without it, the module was giving a spark at the wrong time...

Cheers






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New Using a Bosch 139 Module to run stock point ignition [120-130]
posted by  malloy1  on Fri Jan 28 20:12 CST 2011 >


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