He and his brother, Jason, are each charged with more than 50-counts of first degree murder in the September 2009 murders of a Beason family.
Rick and Ruth Gee and three of their children were killed. A fourth was injured, but survived.
The new lawyers were appointed in response to a possible conflict of interest with one of the original defense lawyers Jay Elmore. Elmore filed a motion last month stating a serious conflict made it impossible for him to represent Harris.
According to Elmore, Harris made a potentially incriminating statement to a Logan County jail inmate who was also a client of Elmore's. The situation put Elmore in a position of being a potential witness.