In between household jobs I replaced the dip headlamps with Osram Nightbreakers as recommended by
David A. I'd previously updated with Halfords very own upgrades which didn't seem that much different tbh. Can't road test at the moment as I've had the regulation couple of DIY tinnies. Open paint can, open beer can.
I'll report when we've next been out in t'dark.
Whilst under the bonnet I checked the voltage at the lamp terminal block: a couple of mV under battery voltage so all good. Cable resistance an all dat ting. If significantly lower would be an indication of bad earth etc. Also gave the headlamp glass a T cut: removes any bloom.
Actually one of the least painless jobs on a TF: if only all repairs/replacements were as painless!