The above NSE nifty auto screener gives you Live nifty auto stocks yesterday high and yesterday low breakout levels, in live market after following this levels you can easily find out the trend of nifty auto.
Trend up= If major auto stocks trades above yesterday high it means trend will be positive.
Trend Down =If major auto stocks trades below yesterday low trend will be negative.
Neutral = If auto stocks trades between yesterday high and low then NIFTY auto INDEX will be act like sideways .
You can also track live nifty auto heat map for today market.