i don't have the horn capacitor value in my list of truck capacitors
points cap: 19106636 1869704 1869706 0.2 uF
with regards to noise suppression when installing the radio:
on voltage regulator BAT pin 1912900 0.5 uF (3-1/8 inch lead)
on generator ARMATURE terminal: 1911095 0.3 uF or 1910147 0.5 uF
on ignition switch side of ignition coil: 1930274 0.3 uF or 1910147 0.5 uF
on back of instrument AMP meter: 7257919 0.5 uF
when it comes to capacitors in these truck circuits, 10 or even 20% is usually close enough
todays standard values are 0.22 0.33 0.47, but some automotive specific capacitors come in any oddball value still
i'll see if i can track down information on that horn capacitor, i'm curious now
-s
