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Triumph Repair/TR7, ignition coil


robert spencer wrote at 2014-01-22 23:59:56
Hi Howard a wee update,

checked the voltage across the terminals with car ignition on and got 12.4 Volts, disconnected the -ve, jumped the -ve to ground for a second with a wire and keeping the +ve connected got a really low reading on the meter of 260mV, thought I would get either the 6-8 Volts for an internal resistor or 11-12 Volts for an external fitting. Methinks this coil is faulty Note: connections: -ve wire is white/slate...+ve wire is white/yellow that is the original wiring configuration and therefore more or less confirms that the coil is an original type with inbuilt ballast

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Howard M. Fitzcharles III


Triumph TR-4 up & Spitfire, and Engine theory


Dealership line mechanic on MG, Triumph, Jaguar for 15 years, Instructor in commercial mechanics school 2 yr. Product information manager for piston and valve manufacture, Instructor & hotline answer man for import car parts importer 15 yrs.

Associate member SAE EAA member

Import Car magazine

ASE Master Auto with L-1 certification up to 2000

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