Mercedes Benz repair: mercedes benz 300D 1977, mercedes benz 300d, number search results

Question
Heater blows but no heat.  What is wrong and where is the failed element located?  
After sitting for 10 years, dash lights won't come on,  what are the possible probolems and where are the failed elements located?

Answer
#1. Replace ALL fuses with new.

electrical problems or gremlins
[url]http://www.mercedesshop.com/shopforum/showthread.php?p=813923#post813923[/url]



#2. Possible bad mono valve.

Climate Control:
http://www.mercedesshop.com/shopforum/showthread.php?t=142408




#3. The following links are for dash lights.

no dash lights, flaky tach, temp and fuel gauge not working...what gives?
[url]http://www.mercedesshop.com/shopforum/showthread.php?t=141148[/url]

300D Instrument Cluster Lights
[url]http://www.mercedesshop.com/shopforum/showthread.php?t=65955[/url]

How to remove instrument cluster.
[url]http://www.mercedesshop.com/shopforum/showthread.php?p=176202#post176202[/url]

Lets' Pull the Instrument Cluster!
[url]http://www.mercedesshop.com/shopforum/showthread.php?p=447830#post447830[/url]




PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1977 Mercedes Benz 300D
Part: Mono Valve Repair Kit
 Note:  Heater Valve
Electromagnetic heater valve.     
 Chassis: 211432-
R3023-15174 Mono Valve Repair Kit Bosch IN STOCK $55.97  

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...