On harness PCB electrical center

An electrical center is mounted on a wiring harness. The electrical center comprises an upper insulator housing having a plurality of upper terminal receiving cavities, a circuit board assembly disposed in the upper housing below the upper terminal receiving cavities, a plurality of terminals mounted on the circuit board contact portions above the circuit board disposed in the upper terminal receiving cavities for engaging mating terminals plugged into the upper terminal receiving cavities, and a lower insulator housing having a plurality of lower terminal receiving cavities. The terminals mounted on the circuit board have contact portions below the circuit board disposed in the lower terminal receiving cavities for engaging mating terminals that are attached to wires of the wiring harness and that are plugged in the lower terminal receiving cavities. The upper housing may be mated to the lower housing in a prestaged condition to facilitate loading of the mating terminals that are attached to the wires of the wiring harness. The housings are adapted for use with a press holder to move from the prestaged condition to the fully seated condition.