Good morning Gents,
Update so far,
After a long wait the new relay and 20 fuses arrived ( fuses just in case ).
Fitted relay the correct way 85 to ground, all was well no fuses blowing this time, however I am back to the original situation which is when the side lights are switched on the speedo jumps to 40 mph and then returns to zero.
This is with a relay incorporating a diode.
All other aspects work perfect drl's swich off when side lights are switched on, side lights ok, head lights ok,indicators and hazards ok.
I'm at a loss now, the question is will this cause any major problems if left as is. I could live with the jumping speedo if needed.
Any ideas chaps?
Rob.
What a journey Rob! Glad you have proven absolutely it's an issue with the relay coil though. My only thought when reading your quoted post, was try another diode relay but kept quiet as it seemed such a shot in the dark. Would now think this a good idea especially a lower power or better brand one as have a feeling this issue will eventually rear it's ugly head again as is.
Not sure if I've mentioned it before but have in the past seen a very clear demonstration of the back emf effect from a relay coil when it's de-energised. A non diode relay on my narrowboat to power the tunnel lamp, had a small led warning light wired across its coil. It initially didn't indicate although the lamp came on fine. Something of a mystery until I noticed a brief flash of the indicator when I turned the lamp off. Reversed the ambiguous indicator connections and all came good.
