Okay, so it seems you don't define swing highs and lows by reference to a candle high or low as in my first post but rather by movement from a candle high (low) to another candle low (high) as in #3 in the image. 

Pepe.

 

The first thing to understand is the idea of relative swings,
and don't forget that even they are only relative to the chart that you are watching.

I always map out 2 different scales of swing on any one chart,
a longer term swing and a shorter term swing, relative to that chart.
The longer term swing is always easier and more stable because it is based over a longer period of your chart,
the shorter term swing will tend to be more schizophrenic but easy enough to adapt with.

In short I will define a swing high and low based on how the market has been swinging the last few times,
instead of limiting myself to that swing happening correctly in a specific time frame of a few candles.

What a tricky one to answer without an image:

In this image the black pullbacks on the way down display what kind of shorter term swings are in play at that time,
the red pullbacks that follow on the way up could be easily judged to be relative to that.

This is a Daily chart and both that short term swing I have mapped out for you and the the next scale up are easy to see.
When it comes to anything faster than the Daily chart I prefer price based charts to eliminate noise and keep things just as easy.
This article displays how easy it can be to define swings on faster price based charts.
** ** Register Here for Free Membership to see this image/link ** **

How do you define a swing high/low?

Do you use one of the standard definitions:
*swing high is a candle high with one lower high before and after.
*swing low is a candle low with one  higher low before and after

The other definition uses 2 highs/lows before and after the candle high/low.

Some further qualify the above with there must be a close below the low of the highest high candle (close above the high of the lowest low candle).

The other definition I've seen is that a swing high/low is only confirmed when price has moved a certain number of ticks or a defined percentage so as to filter out 'noise'.

Pepe