MSD 6A tach output - Interface with digidash
Thread Starter
Tech Contributor
Joined: Oct 2008
Posts: 3,729
Likes: 190
From: Custer, WI
MSD 6A tach output - Interface with digidash
I recently installed an MSD 6A box along with a FAST computer system, and spliced the Tach output from the MSD box (grey wire) into my tach signal wire that goes to the dash. I do not have a tach filter (lost it) and my tachometer goes crazy above 3000rpm. Does anyone know what type of signal the MSD box outputs, and what type of signal the digidash needs?
There are certain times when the entire dash will light up, like when the car is being Keyed on. Mainly when the engine is increasing RPM at a very fast rate. Does the MSD cause a voltage spike to the dash?
Car is an 85.
I see MSD sells an adapter, however i want to make sure I know what I need before I just buy something.
Link to said adapter:
http://www.summitracing.com/parts/msd-8910
Thanks for any help/input!
Jeremy
There are certain times when the entire dash will light up, like when the car is being Keyed on. Mainly when the engine is increasing RPM at a very fast rate. Does the MSD cause a voltage spike to the dash?
Car is an 85.
I see MSD sells an adapter, however i want to make sure I know what I need before I just buy something.
Link to said adapter:
http://www.summitracing.com/parts/msd-8910
Thanks for any help/input!
Jeremy
Le Mans Master
Joined: Feb 2005
Posts: 6,475
Likes: 564
From: Clearwater Florida
....... I had a 6AL box and it has a port on the end for tach output , the 6A should be the same ... As far as I can see on the MSD wiring diagram , there is no Gray wire ... red (+12V) , orange (coil +) , black (coil -) , white (points) , violet , and green (magnetic pick-up) ..... The Main power leads are heavy gauge Red and Black and should be connected directly to the battery .........
Thread Starter
Tech Contributor
Joined: Oct 2008
Posts: 3,729
Likes: 190
From: Custer, WI
My dual sync dist doesn't have a tach output, just the harness that goes to the ECM to tell it rpm speed. My 6A box has a tach output, (gray) small red (switched 12v), trigger wire (white), magnetic pickup (purple/green), and heavy red and black. I'll try to get you guys some pics
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
My dual sync dist doesn't have a tach output, just the harness that goes to the ECM to tell it rpm speed. My 6A box has a tach output, (gray) small red (switched 12v), trigger wire (white), magnetic pickup (purple/green), and heavy red and black. I'll try to get you guys some pics
