Having had to drain my Ruby radiator a few times, I wasn't happy to see the water running all over the wiring loom, so I removed the rad and drilled the tap 5/16 put a inch long piece of 5/16 brake pipe covered with J B Weld into the tap with 1/2 showing, fastened a piece of rubber hose to the showing pipe and now the water drains into a container with out running all over the steering & wiring 