I tried to start my 85 300SD and there was no power. I pulled the battery and put it on the charger and the charger indicated that it was at full charge. I put the battery back in and tried to start and no power.Windows do not work or the radio or the dome light. Any ideas on where to look first. It has been sitting for 3 weeks.

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85 300SD
02 F350 Diesel 2WD
96 F250 Gas 4WD
02 Accent
06 KLR650
04 CRf450r
Mahindra 3525 Diesel

You have a bad connection some place. Clean the battery terminals and check the ground connection to the frame and check for voltage at the fuse box.

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

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Check your fuses.