If you're rewiring your race car, you can't go wrong with this 10 circuit race only wiring harness from Painless Performance®™. All the wires in this kit have been pneumatically terminated and pre-inserted into the fuse block. The kit also features a relay for each fused circuit. When paired with Painless Performance®™switch panel #50201 or #50202, installation is extra easy due to the plug and play design. For more information about this race car wiring harness, check out the online instruction manual.