Alan
We had a chit chat about your ABS problem over a transatlantic phone call although the NO vote and Labor in Scotland was the focus of the discussion!
Gordon considered the ABS frequency had something to do with the flickering which I believe was determined by disconnection.
Now from my experiences and one we had last week I have reason to think you have a circuit fault in the ABS brick itself.
We had a 2005 unit in with an ABS fault showing no signal condition on the left hand rear sensor/hub. Exposing the sensor and tone ring although nothing seemed amiss we cleaned it, and made sure the air gap was good. With scanner on it for a road test it threw an immediate code--same fault!
To be on the safe side we installed a new sensor, jacked up the wheel put it in gear and it then showed Rht front fault--drive it up the street and same original fault rht hand rear fault! Hmm!
OK out with the headlamp remove the ABS multi pin socket ohm out all out then check with an oscilloscope, all signals intact.
Having reconnected it we cleared the codes and this time we got our old favorite fault back --that hoary old problem
return pump fault!
I suspect the circuits in the brick are compromised and once the unit sees a threshold frequency it thinks there is a skid/wheel slip condition and it is trying to activate the ABS return pump which is pulling power directly from the main circuits through the +ve feed to the brick. Hence the flickering.
However before doing anything I would check the integrity of the earths/grounds because experience tells me that many a confusing problem with DC voltages and circuits on vehicles can be attributed to poor grounding of circuits.
Gordon is about, but off to Bath on Monday with Steph to celebrate his 60th in the new hot springs resort complex they have built.
For those who don't know what the City of Bath or Aquae Sulis Roman Baths here's some info.
http://whc.unesco.org/en/list/428
For Brits who have never seen or heard of Glenwood Springs here's the Colorado equivalent:-
http://www.hotspringspool.com/swim.
Maybe it will be a world heritage site in a 1000 years!
Allen its just the spot to sooth aching limbs after a session on the nearby ski resort of Sunlight--then a wee dram of Scotch by a roaring log fire--"lubricating" parts that need lubricating!
Allen if all fails I think you will have to consider a new ABS brick. Let us all know how you get on!
All the best
Cheers Dennis
