Hey all. For the 4 months I've owned my 300D I've been fighting an intermittent charging issue. Battery is new, alternator is a reman Saab AL129X with a good regulator, all charging and battery cables are new 4 and 2AWG respectively.
I've traced it to a current draw on fuse #14. Aux water pump is deleted, no monovalve, kickdown switch is unplugged since it doesn't work, tried unplugging the glow timer with no change. With fuse 14 out, it works great and charges at a solid 14.6v at idle. With the fuse in and the glow timer unplugged, it drops below 12v quickly at idle and will not go above 13.2v.
The past few days have been warm enough that it starts fine with the fuse out, other than a smoke show out the exhaust. But I'd like at least my glow plugs to work.
My FSM schematic doesn't list anything else on fuse 14 that I haven't tried disconnecting so I'm a bit lost.

The fuse diagram I have shows automatic climate control on Fuse #14. Could be that your servo is not parking after shutdown. They are known to do this and cause battery drain.

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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino

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It only drains with the key on, and I don't think I have the "evil servo". My fuse diagram doesn't say about the auto climate control. Is the servo also the heater water pump/vacuum pump thing that's just behind the passenger headlight? If so, I have already removed that since it was broken.

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$350 1977 World's Ugliest 300D. Custom built turbo setup, TD04H-13T, eBay external wastegate, fender exit exhaust, mostly gutted interior, b20 biodiesel, many other cheap fun ratrod-ish mods