[Oletrucks] Electrical Shut Off Switch

[Rrogers57]

Thanks Mark!

Robert Rogers


 Sent from my iPhone

On Jul 6, 2011, at 6:15 PM, "mark at noakes.com" <mark at noakes.com> wrote:

> A diode is the one way device; needs to be sized correctly for voltage and
current. Why not switch the plus side though and have one circuit for
everything but the PCM and one for the PCM?
>
> Mark N
> 58 Chevy Suburban
> 58 GMC NAPCO wideside pickup
>
> On 7/6/11 6:44 PM, Rrogers57 wrote:
>> Wouldn't a small amperage fuse on either the ground or hot to the PCM and
>> radio protect you from this?
>>
>> If not, there is an electronic device, can't think of the name of it right
now
>> bit it's like a resistor, that functions as a one way gate for
electricity.
>> Someone with more functioning brain cells than I have right now could tell
you
>> what it is. I have used them in the past on alternator conversions to keep
the
>> charging wire from back feeding into the alternator causing the engine to
not
>> shut off when you turn off the ignition.
>>
>>
>> Good luck!
>>
>> Robert Rogers
>>
>>  Sent from my iPhone
>>
>> On Jul 6, 2011, at 2:54 PM, "James Hays"<thomasind at nventure.com>  wrote:
>>
>>> Hi Gang: Got my head spinning - need some electrical routing help.
>>>
>>>
>>>
>>> Have GM 350 with PCM Engine Controls. Installed battery electrical shut
off
>>> switch on the neg. side&  routed a separate ground to the PCM 3 ground
>> wires
>>> for constant wanting constant power as needed to keep the PCM from
>>> re-programming each time you start the engine.
>>>
>>>
>>>
>>> Problem is with the shut off switch open ( off ) still have ground at
>> normal
>>> places - engine, frame&  so on. The way I look at it if I ever ( mistake
)
>>> try to start the engine with its heavy draw without connecting ( closing
)
>>> shut off switch I will cook the light weight wires in the PCM.
>>>
>>>
>>>
>>> Is there any way to have constant energy for the PCM ( and radio clock )&
>>> still have a main shut off switch - like it to be neg. but would settle
>> plus
>>> side if it will just work without cooking stuff.
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Jim
>>>
>>> 55-1st PU 5 window / 350/ 4L60E
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>> _______________________________________________
>>
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> _______________________________________________
>
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