05-09-2013, 11:45 PM
Join Date: Apr 2012
Total Cats: 0
MSPNP1 Serial Cable DIN Pinout. Need Help.
I have not yet needed to ask a question though out my entire megasquirt install. which involved installing a PNP9697 into my 90 with a 94 1.8litre.
But I am now stumped with this small issue.
All was going well and had the car fairly well tuned. Until my girlfriend yanked on the Serial cable into my laptop pulling the wires from the connector on the DB9 (computer end) of the cable.
I have searches for a few days and cant find any info.on the 4 pin connector socket on my megasquirt. Once I know the fuction.of these pins I can resolder the plug.
Which is RX which is TX??
Open the case there are four wires connected to the socket.
Red. Blue. Yellow. Green.
I have worked out Blue is ground.
Im guessing yellow and green are rx tx ( recieve and transmit data )
But im not sure.
I have tried
Blue to DB pin 5 ground.
Yellow to DB pin 2 RX
Green to pin 3 TX
red to DB pin 9 - no fuction.
However no connection.
This isnt a connection issue with settings and port numbers
I simply have my serial cable.wired.wrong.
Can some one please help.
A continuity test would be a simple answer.
or even a picture of the db 9 with the claim.shell.removed
. mind you these wire colors are different but may still help me.
Thanks in advance