H4 to H13
This will allow you to install a H13 bulb in place of your H4 bulb. socket plugs into your harness, H13 sockets plug into H13 bulb.
Made with 16 gauge SXL wire, terminals are crimped and soldered and loom is installed to protect the wires.
H4 is the same as 9003, 6014, 6006
H4 to H13: $25.00 pair. (2 harnesses)