Today's Message Index:
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1. 04:23 AM - Re: Which Oil Pressure Switch? (Mudfly)
2. 08:24 PM - Re: Re: Which Oil Pressure Switch? (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Which Oil Pressure Switch? |
[quote="Eric Page"][quote="Mudfly"]I'm having trouble finding a wire diagram for
my unit, but guess the enable pin goes to ground.[/quote]
Here are the installation instructions for the unit you mentioned. Wiring data
is on the first page. The enable pin is active high.
https://tinyurl.com/386autu8+[/quote]
Thanks Eric
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510669#510669
Message 2
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| Subject: | Re: Which Oil Pressure Switch? |
> Curious: What kind of ignition
> system do you have?
> Bob . . .
>
> ////
>
>Bob,
>It's a Honeywell LM-HH3AS-H21. The only document I have been able
>to find is the data sheet on this page.
>https://www.digikey.com/en/products/detail/honeywell-sensing-and-productivity-solutions/LM-HH3AS-H21/5069695
>My current electrical diagram has the unit powered off the Main Power
>Bus so it should illuminate the LCD numbers when the battery is
>switched on. I need to find a home for wire from the enable pin.
looked all over the data sheet and couldn't
find a callout for enable pin functionality . . .
for a Honeywell product, I find that surprising.
Anywho, I suppose your assertion of active
pull-down is correct.
>My planned ignition system is a SureFly on the left and a Slick mag
>on the right. I'm working on a post for the list for a small can of worms
>I've opened with that system.
Actually, no big deal. Given that you have
a magneto, let's consider an ignition activity
detector tie to the Slick p-lead.
I did a sketch for a reader about a quarter
century back. I'll see if I can dig it up
or duplicate it. Probably have all the needed
parts to dedicate to the cause. Watch
this space.
Bob . . .
////
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