Dual battery circuit for winch & power inverter with parallel isolation relays and indicator LED.
NON-STANDARD WIRING - DO NOT USE THIS DIAGRAM FOR DIAGNOSIS!!!
The aux.batt. switch positions are: Automatic (normal, aux.batt. is charged when the engine is running & provides extra reserve minutes when key-on, engine off); Isolate (aux.batt. is not connected to the alternator or main batt.); Jump-start (main batt. dead/gone, aux.batt. always connected).
The 2-color LED can be RadioShack 276-0012 (2.8V 30mA) with resistor 271-012 (330 Ohm 1/8W). If it lights green, the aux.batt. is powering the truck; if it lights red, the aux.batt. is weak.
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![batteries.jpg Dual battery circuit for winch & power inverter with parallel isolation relays and indicator LED.
NON-STANDARD WIRING - DO NOT USE THIS DIAGRAM FOR DIAGNOSIS!!!
The aux.batt. switch positions are: Automatic (normal, aux.batt. is charged when the engine is running & provides extra reserve minutes when key-on, engine off); Isolate (aux.batt. is not connected to the alternator or main batt.); Jump-start (main batt. dead/gone, aux.batt. always connected).
The 2-color LED can be RadioShack 276-0012 (2.8V 30mA) with resistor 271-012 (330 Ohm 1/8W). If it lights green, the aux.batt. is powering the truck; if it lights red, the aux.batt. is weak.
[url=https://www.supermotors.net/registry/media/1046329][img]https://www.supermotors.net/getfile/1046329/thumbnail/ledsresrs.jpg[/img][/url]
See also:
[url=https://www.supermotors.net/registry/2742/84974-4][img]https://www.supermotors.net/getfile/1067160/thumbnail/intro01.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/905422][img]https://www.supermotors.net/getfile/905422/thumbnail/battrelayaux.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/902141][img]https://www.supermotors.net/getfile/902141/thumbnail/ambulancewiring.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/910894][img]https://www.supermotors.net/getfile/910894/thumbnail/harness93modauxbatt.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/934060][img]https://www.supermotors.net/getfile/934060/thumbnail/10xmbr.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/974562][img]https://www.supermotors.net/getfile/974562/thumbnail/33relays.jpg[/img][/url]](https://www.supermotors.net/getfile/910636/fullsize/batteries.jpg)