Generally
Knot cross in original design with grease nipple. On the middle shoulder is this cross in the front. For 1 car, 1 junction box of this model is therefore required.
Suitable since 1949.
Fleetwood 60 special after chassis number 68090
All other series 61 & 62 after chassis number 62951
Since only 92,554 1949 Cadillacs were produced, most 1949s do not have this cross
If you are unsure, compare your old knot cross with the picture