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diff --git a/src/electronics/wire.h b/src/electronics/wire.h
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+/***************************************************************************
+ *   Copyright (C) 2005 by David Saxton                                    *
+ *   [email protected]                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#ifndef WIRE_H
+#define WIRE_H
+
+#include <qguardedptr.h>
+#include <qobject.h>
+
+class Pin;
+
+/**
+@author David Saxton
+*/
+class Wire : public QObject
+{
+	public:
+		Wire( Pin * startPin, Pin * endPin );
+		~Wire();
+
+		/**
+		 * Attempts to calculate the current that is flowing through
+		 * the connector. Returns true if successfuly, otherwise returns false
+		 */
+		bool calculateCurrent();
+		/**
+		 * Returns true if the current flowing through the connector is known
+		 */
+		bool currentIsKnown() const { return m_bCurrentIsKnown; }
+		/**
+		 * Set whether the actual current flowing into this node is known (in some
+		 * cases - such as this node being ground - it is not known, and so the
+		 * value returned by current() cannot be relied on.
+		 */
+		void setCurrentKnown( bool known );
+		/**
+		 * Returns the current flowing through the connector.
+		 * This only applies for electronic connectors
+		 */
+		double current() const { return m_current; } 
+		/**
+		 * Returns the voltage at the connector. This is an average of the
+		 * voltages at either end.
+		 */
+		double voltage() const;
+		
+		Pin * startPin() const { return m_pStartPin; }
+		Pin * endPin() const { return m_pEndPin; }
+		
+	protected:
+		double m_current;
+		bool m_bCurrentIsKnown;
+		QGuardedPtr<Pin> m_pStartPin;
+		QGuardedPtr<Pin> m_pEndPin;
+};
+
+#endif