Has anyone ever heard or does anyone know about an indicator that runs off of the equity in your account rather than the pips per trade?
It would need custom charting software to do that. Excel might do the trick since it has built-in moving averages. You would then need to export your trade records to CSV file and open it in excel. In Excel, you can plot the balances in a chart and add moving average indicator using the chart functionality.
I stumbled across a TA Library for excel which covers a lot more indicators. Try "Ta-lib excel" in google.
P.S. I didn't see "trailing stop" in title. You mean you want the indicator to automatically close the positions.