Just seen this topic:
I discovered that one of those links on my car was all burnt out. There were no problems apparent with the car other than this burnt wire. I replaced like with like, and the wire has been fine since.
The only problem with replacing them was that I couldnt find a soldering iron big enough to solder into the main fusebox feed wires
Got there in the end though!!!
I have a SECS monitor, and that shows 13.2 -13.5 volts at the ECU under no load, and never drops below say 12.8 under full load - will check this later on for you
I couldnt figure out the purpose of the little blighters 100%
Neil.