This 10 circuit Race only harness features a relay for each fused circuit. The wires are pneumatically terminated and pre-inserted into the fuse block and relay blocks. The fuse block is labeled for the circuits below but can be used to power any 12 volt electrical component. If you are also looking for a switch panel we offer Painless part numbers 50201 & 50202. These are designed to be plug and play with this harness. Each wire is oversized and custom printed with the circuit identification as well as using GM color codes for easy installation.