MSD and Year One Tach

Anybody know if a tach adapter is required to use one of the Year One tachs with the MSD 6AL?

I connected the tach input to the MSD tach connector and the tach registers up until 1400 RPM, then it drops to 0 and remains there until the RPM's come back down.

Ron

 

I cant run an MSD with that tach or any stock tach for that matter. The MSD needs a GOOD AM tach to work....at least around here anyway
Mostly since My chevelle buddys roll tach and the tach I had in my GS never worked with the MSD. We both went to AM tachs

 

Sounds like I now have an expensive dash hole filler ou:

 

for whatever it's worth, I have the year one hood tach and it works fine with my MSD 6A

 

Mine works

I have a year one hood tach and run a MSD 6AL with no problem at all. A friend tried the same thing and had to use the MSD adapter they sell and now his works fine also. Give the adapter a try, it made all the difference one my buddy's car. :TU:

 

Using a rebuilt original hood tach here with an MSD digital 6 with no problems. I think you'll be ok if you just use the tach output on the MSD. I really think you'd not like the results of hooking the tach to the neg side of the coil with the MSD firing to it!

regards

 

Fixed

Received my MSD Tach Adapter P/N 8920 from Summit on Saturday and installed it. The tach works now.

Just for reference, MSD P/N 8920 is for use when using the magnetic pickup and P/N 8910 is for use when triggering off of the MSD white wire.