For traders:
If the McClellan Oscillator has lows above lows and the Summation Index is rising, be long.
If the McClellan Oscillator has highs below highs and the Summation Index is falling, be short or flat.
For investors:
If the Summation Index has lows above lows and the price and 50-day moving average are above the 200-day moving average, be long.
If the Summation Index has highs below highs and the price and 50-day moving average is below the 200-day moving average be short or flat.
As for the the beginnings of Bull and Bear Markets see the chart.
Good trading to everyone.

http://stockcharts.com/c-sc/sc?s=$SPX&p=D&yr=8&mn=0&dy=0&i=p08842762876&a=154490513&r=6125.png