Hi, looking for some technical help. My impreza has prodrive headlights which are very old. I have stripped them down, de-rusted them and put them back together. I have one issue. The relay attached to the head lights are broken. Terminals rusted away. I can't find replacements anywhere, probably due to age. They are Hella 4RA 003 510 - 08. 12V 30 Amp. Does anyone know whwere I can get some or what equivalent and can replace them with. Thanks in advance.