What will happen if coil wires are reversed? Ford Focus coils go on spark plugs today... $6 each shipped new.
- Thread starter DreamV4
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If you catch a fly alive.....pluck off its wings......and release it. What do you call it? Surely not a fly as it doesnt fly anymore.
You call it, a 'flew.'
Actually, the best agreed upon answer is "walk".
What exactly do you mean by nothing will happen?
Bearing in mind that the primary and secondary coils share a common connection, which is usually ground, see diagram below. So if you plan to swap the wires on the input, you are effectively grounding the driver, so, yes, as far as spark generation goes, nothing will happen but the driver is likely to release smoke.
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Not sure what happened there but I edited all that out ad ts not 100% incorrect.
Providing the coil pack does not have a connection to earth, (for example the outer metal can on old style car ignition coils) the input wires can be reversed, the result being spark is negative instead of positive.
Trawling the net is inconclusive. Some say engine runs well, others not. The only reason for this I came across was since the spark jumps from positive to earth, the central electrode is a much smaller area than the L shaped earth tab so it's place of origin will be consistent.
I seem to recall the ford edis coil pack uses wasted spark does not have the secondary connected to primary but to the plugs, so one spark is positive going, the other negative.
So the answer is it should work, but it's just a matter of swapping the 2 wires over so why not use it like the way the engineers intended?
Providing the coil pack does not have a connection to earth, (for example the outer metal can on old style car ignition coils) the input wires can be reversed, the result being spark is negative instead of positive.
Trawling the net is inconclusive. Some say engine runs well, others not. The only reason for this I came across was since the spark jumps from positive to earth, the central electrode is a much smaller area than the L shaped earth tab so it's place of origin will be consistent.
I seem to recall the ford edis coil pack uses wasted spark does not have the secondary connected to primary but to the plugs, so one spark is positive going, the other negative.
So the answer is it should work, but it's just a matter of swapping the 2 wires over so why not use it like the way the engineers intended?
We have wired up COP's both ways with no discernable difference though we do go ahead and wire them normally lol.
desert_max
Well-Known Member
A coil is a coil.
(Unless there's a diode across it - which is not typically an application found in automotive ignitions that I know of).
(Unless there's a diode across it - which is not typically an application found in automotive ignitions that I know of).
