[Kenth]

Pontiac HEI uses a coil with white and red leads.

Info from Schurkey:
There are two color-coded (coil-in-cap) ignition coils, and three color-coded pickup coils. (Note that external ignition coils are not color coded.) One coil-in-cap ignition coil uses red and yellow wires; the other
uses red and white wires. They are functionally identical except the magnetic (not electrical) polarity is
opposite. The yellow/red ignition coil is neither a higher- or lower-performance version of the white/red
ignition coil. They have the SAME electrical specs, differing only in the direction (not strength) of the
magnetic field they radiate.
One pickup coil uses either a yellow tyrap or a yellow plastic connector body on the wires that attach to
the module. Another pickup coil uses either a blue tyrap or black plastic connector body, and the third
pickup coil uses a clear tyrap or a clear plastic connector body. (Some aftermarket manufacturers will
use no connector body instead of a clear one.) The yellow pickup coil has opposite magnetic and electrical polarity from the blue/black, and clear pickup coils. The wires leading from the blue/black; and clear
pickup coils to the module must be crossed to correct the electrical polarity, leaving the magnetic polarity
“backwards”. The metal connectors are sized differently; and the molded plastic connectors are positioned in a way that prevents incorrect connection.
Delco discovered that magnetic interference from the starter/battery cable could trigger “false” sparks at
low RPM—especially during cranking. Sure, you can use mis-matched components—but if you have misfires, backfires, or other ignition problems especially at cranking speed—you’ve been warned. Pickup coils
are selected based on engine family. Ignition coils are then selected based on which pickup coil was selected.
So, for the “traditional” V-8 engines, Chevrolet, Cadillac, and Olds Toronado use the yellow-coded pickup
coil, and because they use the yellow pickup coil, they use the yellow and red ignition coil. Put another
way, the yellow coils are a matched set. Buick, and Oldsmobile except Toronado, use the blue/black
pickup coil, and therefore use the white and red ignition coil. Pontiac uses the clear coded pickup coil. It
is wound the same way as the blue/black coil, but has longer leads to physically fit in the Pontiac version
of the HEI distributor. Therefore it, too, uses the white and red ignition coil. Many parts catalogs indicate
the wrong pickup and ignition coils for Olds Toronados.