From: Mike (michael@tsixroads.com)
Date: Thu Jan 13 2005 - 19:10:42 PST
The blue box on the left fender steps down the 28v output of one of the alternators to 14v to charge the front battery. Even if it is bad or not even hooked up it would not cause your problems. Slaving the truck might not give you 12v for the lights if you have a dead front battery.
I would first check to be sure the front battery is charged then I would check for 12v at the 12v buss next to the glow plug relay on the firewall. It is feed with a red wire that is part of the wire that connects the two batteries together. Just before it connects to the buss it changes to a blue fussable link.
Mike
Tishomingo, MS
-----Original Message-----
From: "mkmvpa@juno.com" <mkmvpa@juno.com>
Sent: Jan 13, 2005 6:26 PM
To: Military Vehicles Mailing List <mil-veh@mil-veh.org>
Subject: [MV] M1010 Ambulance Electrical/Charging problems
I am attempting to resurrect a M1010 CUCV Ambulance for a local museum. It has full electrical in teh ambulance section, and partial or no elctrical in the rest of the truck. The wipers move, but very slowly, no internal or external lights work aside from the ambulance box. The idiot lights work on the dash, but none of the dash lights, headlights, tail lights, turn signals or the flood light on the roof. It does not charge and even when slaved the electrical exhibits the same problems so it goes beyond the alternators not working. I have a suspicion that the regualtor and or voltage relay on the left fron fender under the hood might be the culprits but don't know how to decide if they are. I know that the M1010 is vastly different from the rest of the CUCV family when it comes to electrical. All fuses are good in the fuze box.
If anyone has any direct knowledge on the maintenance of the M1010 please contact me off line.
Than You,
Bob
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