Classic Crab Harmonic Pattern Indicator for MT4 [Free] TFlab

The Classic Crab Harmonic Pattern Indicator (MT4) is a technical analysis tool built for MetaTrader 4, designed to automatically detect Crab Harmonic Patterns based on Fibonacci ratios. Introduced by Scott Carney in 2000, the Crab pattern is among the most precise harmonic formations used for identifying price reversals.
This MT4 indicator outlines the X, A, B, C, and D points of the pattern and displays bullish formations in pink and bearish formations in blue, allowing for intuitive chart interpretation.

You can download it from this link:
https://cdn.tradingfinder.com/file/3...4-by-tflab.zip



You can also access the MetaTrader 5 version of this indicator through this page:


For instructions on how to install:
https://www.forexfactory.com/thread/...-in-metatrader




Indicator Specifications

Categories
Support & Resistance – Chart & Classic – Harmonic
Platform
MetaTrader 4
Skill Level
Intermediate
Indicator Type
Reversal
Timeframes
Multi-Timeframe
Trading Style
Day Trading
Markets Supported
Forex – Cryptocurrency – Stock Market – Indices – Forward Market – Share Stocks
Indicator Logic Overview
The Crab Pattern relies heavily on Fibonacci projections to identify reversal zones:

1. AB retracement of XA: typically between 38.2% to 61.8%
2. BC retracement of AB: generally between 38.2% to 88.6%
3. CD extension: can stretch up to 224% or 361.8% of BC
4. XA projection: CD should extend to 161.8% of XA to confirm the Price Reversal Zone (PRZ) at point D

The D point becomes the focal entry zone for trade setups.
Uptrend Conditions
In the 1-minute AUD/CAD chart, the indicator identifies a bullish Crab pattern, automatically marking X, A, B, C, and D.
When price reaches point D, and reversal confirmation aligns, it indicates a strong buy signal from the PRZ.
Bullish reversal at point D using Classic Crab Harmonic on AUD/CAD
Downtrend Conditions
In the CAD/CHF chart, a bearish Crab pattern is identified and displayed in blue.
Once the price reaches point D, traders can wait for confirmation signals and initiate a sell trade aligned with the reversal zone.
Bearish harmonic signal at point D using Classic Crab on CAD/CHF
Classic Crab Indicator Settings
This MetaTrader 4 indicator provides a range of adjustable parameters:

1. Minimum Length of Wave (candle): Minimum wave size by candle count
2. Num Of Previous Candle: Number of historical candles to analyze
3. Show Lines: Toggle to show/hide pattern outlines
4. BreakPivot: Option to detect pivot breaks
5. Original Pivot to Broken Pivot (Pipet): Set pip distance threshold for pivot validation
6. Shift: Shift patterns left/right on the chart
7. BullishPattern / BearishPattern: Enable/disable detection of either pattern type
8. Style Of Line / Width Of Line: Define line appearance and thickness
9. Custom Color Lines (Bearish / Bullish): Adjust color schemes for each pattern
10. Custom Color Of Text: Change text color displayed on the chart

Settings panel for the Classic Crab Harmonic Indicator in MT4
Conclusion
The Classic Crab Harmonic Pattern Indicator is a powerful MetaTrader 4 tool for detecting price reversal patterns using harmonic structures. Its automatic pattern detection, clear visual presentation, and custom settings make it ideal for traders who use harmonic analysis in markets like Forex, Crypto, Stocks, and more.
By highlighting the point D as the Price Reversal Zone, this indicator enables more confident and well-timed trade entries.