i think it depends on the shift light you get...but to use my MSD pen light with the tach driver i had to buy the pill module (aka RPM activated switch, MSD p/n 8950). I stick in various resistors that tell the shift light when to light up. I tried to go right from the tach driver and couldn't do it.
Just something to consider when selecting lights. I know both MSD and autolite make integrated switches in some of their lights as well. The autolite one is nice as the pills go into the front of the light so no need to go under the hood as I have to.
Cut greenwire with orange stripe on the coil. This is the VCC for the coil. Attach the red with green stripe TOWARDS the COIL. Attach the solid red wire towards the POWER DISTRIBUTION.
THe black is ground, I like to attach it tot he battery cable. THe grey is your tach signal.
You can tie wrap the unit to the hoses and vacuum lines on the side of the battery tray.
If you dont have a soldering iron, then you should not be purchasing this item.
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where is the tach wire?
11.9@121 Bithlo
Linear Mode
