S14 DIYPNP

Ask questions about DIY board assembly issues, fault finding and testing. (Covers all Megasquirt versions and board.)

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1Bad240SX
MS/Extra Newbie
Posts: 4
Joined: Sat Apr 25, 2015 7:26 pm

S14 DIYPNP

Post by 1Bad240SX »

Hi all,

I'm about done with my MSPNP build for my 97 Nissan 240SX. I'm confused about 1 thing though, following the:
DIYPNP Jumper Configuration

I/O Circuits

Input 1 21 15 A/C Relay

Under that section is:
Other Changes/Considerations

A/C Controls

In the Jumper Notes above we've included jumpers for A/C clutch and fan activation using the 'Input 1' circuit. The Input for the AC system comes in from the A/C switch on ConnectorBoard pin 41. The output of the "Input 1" circuit gets jumpered to both 9 and 11 on the ConnectorBoard. These two pins will activate the A/C compressor clutch relay and the A/C condensor fan relay. You will need to leave R14 out of this circuit or cut out R14 if you installed it.

My question is, Input 1 is already connected to 21 and 15. What do I do with those? Leave or disconnect them?
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: S14 DIYPNP

Post by Matt Cramer »

The chart is correct; the text was accidentally cut and pasted from the S14 guide. I'll get it fixed.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
1Bad240SX
MS/Extra Newbie
Posts: 4
Joined: Sat Apr 25, 2015 7:26 pm

Re: S14 DIYPNP

Post by 1Bad240SX »

Thanks Matt!

So I can disregard the A/C notes for my S14 then, and leave R14 in?
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: S14 DIYPNP

Post by Matt Cramer »

R14 needs to be removed.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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