Autometer Tach using MSD GMR Pickup #8918

[Zreddy]

Hi Team,

I can't seem to find a precise way to install this pickup.  A few questions I have...

1) My Autometer tach had the orange and brown loops wires cut, so I resoldered the orange to supposedly set it up for a 6 cylinder calibration, is this possible or is there no turning back once cut?

2) I've seen a few threads were the MSD pickup is connected to the white wire going to the injector solenoid, ECU pinout #7, and White wire going to the coil packs, what has work best for anyone used the MSD pickup?

3) If you do have the MSD pickup install, is your green signal wire connected directly to the Autometer's green signal wire?

4) Anyone with an R33 GTR engine swap? ECU Pinout# 7 wire seems to be yellow/red stripe for the R32 GTR, although my R33 GTR harness has a yellow/blue.  Can anyone confirm the differences please?

 

Many thanks!

Edited November 9, 2017 by Zreddy

[cheftrd]

Re-connecting the orange/brown wires restores it to whatever cylinder operation.

 

Green goes to green.

 

GMR pu must be bolted down, and clamps around one of the coil power supply wires (at the coil so it doesn't register current from more than one coil).

 

http://documents.msdperformance.com/8918.pdf

[Zreddy]

On 11/12/2017 at 8:28 PM, cheftrd said:

Re-connecting the orange/brown wires restores it to whatever cylinder operation.

 

Green goes to green.

 

GMR pu must be bolted down, and clamps around one of the coil power supply wires (at the coil so it doesn't register current from more than one coil).

 

http://documents.msdperformance.com/8918.pdf

I restored the wires to the tach to run a 6 cylinder application, however there is a note in the spec sheet 

Figure 3 - Note: The device that the green signal output wire is attached must be pro- grammed for four (4) cyl-

inder operation.

I guess I'll have to cut the orange/brown wires again and see if this works.

[510sr20det]

note  2  says single cylinder operation