'58 9-5
When I switch off the headlamps they spend 2-3 seconds flickering on-and-off light a strobe, before eventually powering off. This doesn't happen all the time, but appears to be fairly random and can happen after short (<10 miles) or long (>100 miles) journeys
Not yet had a chance to check if there are any codes showing but any thoughts on what I ought to be looking at
TIA
W