If the starter is a problem you could connect a transistor to remove power to the gauges when the starter is engaged.

For LTspice files, the .sub or .lib file goes in the LTspice sub folder.
The .asy file goes in the appropriate LTspice sym folder (for the LM339 that would be the Comparator folder).

 

Right, there's no automated process for importing or "uploading". You just move the files around manually in Finder. You may need to restart LTspice to force it to reload the library.

 

For LTspice files, the .sub or .lib file goes in the LTspice sub folder.
The .asy file goes in the appropriate LTspice sym folder (for the LM339 that would be the Comparator folder).

My Comparator file has 42 choices and they start with LT1011. Quickly becomes LTC and ends with RH111.

I have found more files in an LTSpice folder. Even though I can open the asc files I don't know if they're models or examples. Anyone living in northern Utah wanna come over and have pizza and beer and show me how to do this stuff? I'm starting to get frustrated with this. Even YouTube isn't very helpful. Too much stuff is assumed I already know. Sadly - I don't.

 

Am I at least on the right track?

.SUBCKT Xatp106 1 2 3

**************************************

* Model Generated by MODPEX *

*Copyright(c) Symmetry Design Systems*

* All Rights Reserved *

* UNPUBLISHED LICENSED SOFTWARE *

* Contains Proprietary Information *

* Which is The Property of *

* SYMMETRY OR ITS LICENSORS *

*Commercial Use or Resale Restricted *

* by Symmetry License Agreement *

**************************************

* Model generated on Oct 14, 15

* MODEL FORMAT: SPICE2

* Symmetry POWER MOS Model (Version 1.0)

* External Node Designations

* Node 1 -> Drain

* Node 2 -> Gate

* Node 3 -> Source

M1 9 7 8 8 MM L=100u W=100u

* Default values used in MM:

* The voltage-dependent capacitances are

* not included. Other default values are:

* RS=0 RD=0 LD=0 CBD=0 CBS=0 CGBO=0

.MODEL MM PMOS LEVEL=1 IS=1e-32

+VTO=-2.31886 LAMBDA=0.0533345 KP=37.4042

+CGSO=1.28371e-05 CGDO=1e-11

RS 8 3 0.0151817

D1 1 3 MD

.MODEL MD D IS=8.7345e-12 RS=0.00525787 N=1.08604 BV=48

+IBV=0.001 EG=1.2 XTI=2.76076 TT=2e-09

+CJO=5.49706e-10 VJ=0.5 M=0.58985 FC=0.5

RDS 3 1 2e+10

RD 9 1 0.0001

RG 2 7 28.26

D2 5 4 MD1

* Default values used in MD1:

* RS=0 EG=1.11 XTI=3.0 TT=0

* BV=infinite IBV=1mA

.MODEL MD1 D IS=1e-32 N=50

+CJO=6.12334e-10 VJ=0.5 M=0.372331 FC=1e-08

D3 5 0 MD2

* Default values used in MD2:

* EG=1.11 XTI=3.0 TT=0 CJO=0

* BV=infinite IBV=1mA

.MODEL MD2 D IS=1e-10 N=0.4 RS=3.00009e-06

RL 5 10 1

FI2 7 9 VFI2 -1

VFI2 4 0 0

EV16 10 0 9 7 1

CAP 11 10 1.29607e-09

FI1 7 9 VFI1 -1

VFI1 11 6 0

RCAP 6 10 1

D4 6 0 MD3

* Default values used in MD3:

* EG=1.11 XTI=3.0 TT=0 CJO=0

* RS=0 BV=infinite IBV=1mA

.MODEL MD3 D IS=1e-10 N=0.4

.ENDS atp106

 

I'd walk you through it but unfortunately my Mac is suffering a possible drive failure and I can't boot. I don't remember it well enough to guide you by memory.

 

....................
I have found more files in an LTSpice folder. Even though I can open the asc files I don't know if they're models or examples. Anyone living in northern Utah wanna come over and have pizza and beer and show me how to do this stuff? I'm starting to get frustrated with this. Even YouTube isn't very helpful. Too much stuff is assumed I already know. Sadly - I don't.

.asc files are simulation files.
.lib and .sub files are model files.
.asy files are schematic symbol files.

You need to move the new files to the appropriate folder, as I previously described, using the Mac equivalent of Windows File Explorer (the Finder I believe).
Perhaps something here will help you with that.
You have to find the folder that the files were downloaded to, and then move them to wherever the LTspice files are located in the Mac (it's in the LTC folder in Windows).
You can't do that from LTspice itself.

 

And the frustration grows. I love my Mac. However, it's not always easy to find where the folders went. Using "Finder" (Mac version of "system folders") I have to search for LTSpice in order to discover the spice main folder. Inside the folder is a bunch of files but no other files. And some of them are obscure, meaning I don't know their function to the system but I'm sure they're important, or they wouldn't be there. Moving files there means KNOWING what you're moving and moving EVERYTHING associated with the file you want to upload.

I'm trying everything I know. So far I've not stumbled across the right answer. But thanks for the help (everyone).