'Float forward' is a good mnemonic.
Does any one know what the difference is with the fuel sender unit of the bj8 p/n021-571 , bn1---bj7 p/n021-570. The bn4 to bj8 use the same fuel tank, why the different part number?? Have the senders both the same ohm resistance?? curious! Saltiga
Doesn't the BJ8 have black-faced gauges, versus the champagne-colored faces of the earlier cars? I'd expect them to have different part numbers.I'm guessing the 571 and 570 have different resistances. Moss lists a different PN for the BJ8 gauge vs the earlier ones. The front connection vs the rear connection would be an easy way for a service person to make sure they're installing the correct sender. Otherwise, why would Moss bother to make two different senders when the wire connection is hidden under the floor mat?