wiring schematic

Chevy Spark EV Forum

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Wire schematics are in the service manual. You can find more info about purchasing the service manual here:

http://www.mychevysparkev.com/forum/viewtopic.php?f=9&t=3933

Bryce
 
The typical approach is to use an off-the-shelf 12V inverter connected to the 12V lead acid battery. With the car turned on, the DC-DC converter charges the 12V system from the high voltage battery. For more common cars, you can buy bolt-in kits for exactly this purpose:

http://www.evextend.com/Emergency-Power-Kit.php

Perhaps you could contact that vendor and see if they're interested in making a kit for the Spark EV. While it's not an extremely popular car, you can often convince small businesses like this to make a small batch if there's a guaranteed minimum ("group buy") quantity that are paid for in advance. Several people have discussed it on this forum, so you're not alone.

Bryce
 
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