TWO RECENT VICTORIES WITH MY 1977 300D.
FIRST, I COULDN'T SEE ANYTHING AT NIGHT ON THE DASH BECAUSE THE PLASTIC LIGHT CONDUIT WOULD NOT LET LIGHT TROUGH IT ANY LONGER. INSTALLED AQUA SIGNAL LED HANDY LIGHTS IN BLUE WHITE. ALSO AVAILABLE IN RED AND ORANGE. FIT BEHIND THE EXISTING LIGHTS AND ARE ABSOLUTELY FACTORY AND LIGHT UP THE WHOLE DASH BETTER THAN NEW.

SECOND, THE GLOW PLUGS FOULED WITH CARBON AND SHORTED OUT. VERY EXASPERATING. I USED A 12GAUGE BRASS BREECH CLEANING BRUSH AND THEN PROGRESSIVELY SMALLER BRASS CLEANING BRUSHES TO SIMULATE THE SHAPE OF THE GLOWPLUGS. CAR RUNS PERFECTLY NOW.

THREE, MY A/C IS PRODUCING COLD BUT ONLY HOT AIR COMES OUT. WHERE CAN I FIND A MANUAL FOR THE A/C SYSTEM BEFORE I DIE FROM HEAT? I REPLACE THE ELECTRIC/VACUUM SWITCH, THE COMPRESSOR IS FINE. THE DEFROSTER WILL BLOW YOU OUT OF THE CAR. HELP/. THANKS, RICK IN MIAMI