I just installed a 25 volt   22 microfarrad capacitor between terminals 2
and 4 on the plug for the AFM to fix the intermittent problems that our
Vanagons suffer from.  I read of two ways to  install the capacitor.   But
when I did the job I just popped the connectors out of the plug using a
paper clip and soldered the capacitor onto the metal connector and then
taped it down and covered it with the boot for the AFM.
This seems to be the best way to do the job.  And it was about $99 cheaper
than the dealer.

Malibu Tony 85' Westy 8 degrees BTDC   39 degrees total advance