A modular retainer assembly configured to receive and releasably retain an elongate wire cable, comprising: a first retainer module and a second retainer module that is distinct from and joined to the first retaining module, wherein the first retainer module and the second retainer module each include: a flexible retaining finger (14a, 14b) having a base portion and a flexible finger portion and extending from the base portion, the flexible finger portion having a first arcuate section and a second arcuate section curving in a direction opposite the first arcuate section, the second arcuate section located proximate a tip of the finger portion; and an attachment portion extending from the base portion in a direction opposite the finger portion, wherein the attachment portion has an inner surface and an outer surface opposite the inner surface, and wherein the attachment portion of the first retainer module is secured to the attachment portion of the second retainer module such that a first retaining finger of the first retainer module is located opposite a second retaining finger of the second retainer module, wherein the second retainer module is joined and secured to the first retaining module by a fastening device, wherein the base portion overhangs the inner surface of the attachment portion, characterized in that a thickness of the attachment portion is less than a thickness of the base portion, the fastening device is a pair of first and second fastening devices (16a, 16b), each attachment portion of the first and second retainer modules (12a, 12b) defines a first aperture and a second aperture, each extending therethrough from the inner surface to the outer surface, a first fastening device of the pair of first fastening devices is received in the first aperture and a second fastening device of the pair of second fastening devices is received in the second aperture, each attachment portion of the first and second retainer modules (12a, 12b) defines a first alignment feature protruding from the inner surface and a second alignment feature indented into the inner surface and wherein the first and second alignment features (48, 50) are sized, shaped, and arranged such that the first alignment features are received within the second alignment features when the first and second retainer modules (12a, 12b) are mated together, wherein the first alignment feature has a different cross-sectional shape than the second alignment feature, each attachment portion of the first and second retainer modules (12a, 12b) defines a first countersunk area surrounding the first aperture in which the corresponding first fastening device is received and a second countersunk area surrounding the second aperture in which the corresponding second fastening device is received. a flexible retaining finger (14a, 14b) having a base portion and a flexible finger portion and extending from the base portion, the flexible finger portion having a first arcuate section and a second arcuate section curving in a direction opposite the first arcuate section, the second arcuate section located proximate a tip of the finger portion; and an attachment portion extending from the base portion in a direction opposite the finger portion, wherein the attachment portion has an inner surface and an outer surface opposite the inner surface, and wherein the attachment portion of the first retainer module is secured to the attachment portion of the second retainer module such that a first retaining finger of the first retainer module is located opposite a second retaining finger of the second retainer module, wherein the second retainer module is joined and secured to the first retaining module by a fastening device, wherein the base portion overhangs the inner surface of the attachment portion, characterized in that a thickness of the attachment portion is less than a thickness of the base portion, the fastening device is a pair of first and second fastening devices (16a, 16b), each attachment portion of the first and second retainer modules (12a, 12b) defines a first aperture and a second aperture, each extending therethrough from the inner surface to the outer surface, a first fastening device of the pair of first fastening devices is received in the first aperture and a second fastening device of the pair of second fastening devices is received in the second aperture, each attachment portion of the first and second retainer modules (12a, 12b) defines a first alignment feature protruding from the inner surface and a second alignment feature indented into the inner surface and wherein the first and second alignment features (48, 50) are sized, shaped, and arranged such that the first alignment features are received within the second alignment features when the first and second retainer modules (12a, 12b) are mated together, wherein the first alignment feature has a different cross-sectional shape than the second alignment feature, each attachment portion of the first and second retainer modules (12a, 12b) defines a first countersunk area surrounding the first aperture in which the corresponding first fastening device is received and a second countersunk area surrounding the second aperture in which the corresponding second fastening device is received.