Hey All,

Just gotta tell you with all the info here I got the 240 to fire right up with the 280 dizzy. I even found a few threads on NOT using the spendy little 12-80 module. It works great! With the 12-80 module I would have to use the Weber starting procedures (two pedal pumps and third pedal to start). With the 12-80 module removed using the magnetic pickup from my MSD 6 connected to the 280's dizzy green and red wires it fires with no choke, no pedal pumps, no one third pedal! Fires up with less than a full crank too! I'm sold on that configuration! (I'll post schematics and pics later) But my tach does not work!!!!!

I'm guessing I need the MSD 8910 tach adaptor. The docs I have seen show to hook it up using the switched power (black/white) and the white from the MSD. This is for when you are using the 12-80 module and the white goes to the module. I am not using the white I am using the magnetic pickup (green+violet). Anyone have an idea on how to get that working? Thanks again everyone. BTW....I have two 12-80 modules for sale!!!! anyone? anyone?

Mike

I have the same set-up msd 6 with an early mag pick-up dizzy (pre 12-80) and required the http://www.classiczcars.com/photopost/showgallery.php?cat=500&ppuser=15041

User Gallerytach adapter .Just wire to msd instructions to restore the tach operation

Don,t know what happened there ,but yes you do need the tach adapter

It looks like instead of the 8910 tach adaptor I will need the 8920.....a little more expensive than the 8910. I wonder if a 280 tach will work without an adaptor??? Anyone know?

My tach would not work until I installed the 8920 tach adapter for electronic ignition

Well...I'm still a little confused about this.

I had the e12-80 working and the tach working just fine.

Now the tach wire (black/white) that was hooked to the + Coil is now hooked to the Red switched power for the MSD box. Now.....couldn't I just find another switched 12v to power the MSD and hook that black/white back up to the coil + and get my tach back?