LS PNP Harness first generation Bluetooth ?

[BoostedBitch]

So I have one of the first LS PNP harnesses (Lot 53807) and I have a cable RS232 that come from the newer generation of PNP LS harnesses. ( Long Story) Anyway I can connect to the blue tooth but not to the ECU. I noticed the wiring colors are different from the ECU and was wondering if I have to change the pins in the cable that connects to the Bluetooth ? If so what pins do I have to change?

[Matt Cramer]

A few very early harnesses had the RS232 connector pinned wrong. What's the revision code on this one?

[BoostedBitch]

A few very early harnesses had the RS232 connector pinned wrong. What's the revision code on this one?

Matt I have MS3PH-LS24EV1-A REV C Ref Lot number 53087

[Matt Cramer]

In that case, switch pins "B" and "D" on the harness side of the connector.

[BoostedBitch]

Matt,

So I switched B and D as per your suggestion and then there was no power to the Bluetooth. By doing this we noticed that B which is a 5 volt ref. was then moved to the TX transmitted data. Did you mean I should swap out C and D which be swapping RX to TX and TX to RX?

[Matt Cramer]

The "TX" and "RX" cross over between the MS3Pro and the DB9; you also need to make sure you have the ground on DB9 pin 5 and the 5V on DB9 pin 9.