DavidP, I'm not one for Forums but i got desperate recently and found this thread. We've been on the road in Rosie our red 60 series (similar to yours, Deisel, no turbo, coming up to 300k) for 3 months now and have done over 14000km with no problems. Last week it started hunting whilst accelerating for no particular reason. I checked for fuel leaks but the surging was so regular (every 4 seconds) i knew it had to be electrical. Also with the spotlights on, the 'jolting' would be way more noticeable. We were getting worried as we were working in a community 3 hours north of Broome and were a long way from a mechanic, let alone parts. Also we have an ambitious itinerary which dumps us in Coral Bay for Christmas. Anyway, after reading your post, i cleaned as many earth straps as possible with some emery cloth and a rag. The starter motor strap was the worst but the ones going from the dual batteries were bolted to a painted surface which was probably not doing it any favours. An hour later and no money spent, it works!! We have driven 250km and I've done a night run with as many electrics on as possible and there's no surging whatsoever. I had to join up on here to say thankyou because you may have just saved christmas! Joe & Saar