Used wiring harness from hard top to HRW plug on rear deck (if fitted), Mazda MX-5 & Roadster mk2 & mk2.5. This is the type with the small 4-pin plug (only 3 pins are used),
Some of these have come from cars with the isolator switch fitted and will have 2 extra wires, these can just be connected to earth.
UM00767.