It's been brought to light recently that the Wehrle six pin dedicated wiper delay relay used on Morgan Classics from at least 2006 has a plug in base issue. It appears MMC used a modified 5 pin base to accommodate the narrower sixth pin. On removal or possibly after a hefty thump from a pothole, the extra pin doesn't always remake when pushed back in. Worth remembering if you loose the delayed wipe function.
