MSD WINDOW SWITCH vs ZEX
3rd Gear Member
Joined: Feb 2008
Posts: 801
From: Delaware
Idk, it works perfectly and has for 3+ years now! Here is the link to MSD's website on that product... http://www.msdignition.com/Products/...ow_Switch.aspx
It says right there it works for late model COP cars. Same switch reference by the OP.
It says right there it works for late model COP cars. Same switch reference by the OP.
3rd Gear Member
Joined: Aug 2007
Posts: 670
From: Tulsa, OK
Says right here in the instructions how to wire it in...
http://www.msdignition.com/uploadedf...structions.pdf
WIRING
RED
This is the On/Off wire. Connects to switched 12 volts.
BLACK
Connects to a good ground source.
WHITE
Signal Input. Provides the trigger signal from a tach input, +5-12 volt signal from an ignition tach output terminal, ECU output or coil negative terminal.
http://www.msdignition.com/uploadedf...structions.pdf
WIRING
RED
This is the On/Off wire. Connects to switched 12 volts.
BLACK
Connects to a good ground source.
WHITE
Signal Input. Provides the trigger signal from a tach input, +5-12 volt signal from an ignition tach output terminal, ECU output or coil negative terminal.
3rd Gear Member
Joined: Aug 2007
Posts: 670
From: Tulsa, OK
3rd Gear Member
Joined: Feb 2008
Posts: 801
From: Delaware
I noticed that in the product discription. It must have a built in tach adapter, because connecting to just one coils negative side would only give you the firing signal of that one coil instead of a global signal to all coils.
5th Gear Member
Joined: May 2007
Posts: 2,795
From: Michigan
Tim I also have the msd digital like you posted. I have if tapped into cyl #1 green with white stripe wire. The switch reads rpm but will go to 0 for no reason when I'm at 3k or whatever till redline. What wire are you tapped into for the tach? Did you use the yellow or grey wire? What are all the settings you have it at?
3rd Gear Member
Joined: Aug 2007
Posts: 670
From: Tulsa, OK
Tim I also have the msd digital like you posted. I have if tapped into cyl #1 green with white stripe wire. The switch reads rpm but will go to 0 for no reason when I'm at 3k or whatever till redline. What wire are you tapped into for the tach? Did you use the yellow or grey wire? What are all the settings you have it at?
I have the white wire that comes from the switch tapped into the white wire w/red stripe going into the COP on the #8 cylinder. The red wire should be the common color for each COP, you want the other wire.
When the switch powers on, I have the first setting set to 1 cylinder. The yellow wire coming out of the switch connects to the negative on your solenoids and grounds the solenoids when the selected rpm is reached.
Last edited by tim2002gt; Feb 9, 2011 at 09:44 PM.
5th Gear Member
Joined: May 2007
Posts: 2,795
From: Michigan
Is that the same for a 4v? If I'm reading that right #1 is the passenger front cyl.?
Shiatttt I'm tapped into the #5 green whith white stripe. I was told to check for a loose connection but it sodered that bitccch. I will try it your way and see what happens.thanks
I'm assueming I would also tap into that same wire for my shift light?
Shiatttt I'm tapped into the #5 green whith white stripe. I was told to check for a loose connection but it sodered that bitccch. I will try it your way and see what happens.thanks
I'm assueming I would also tap into that same wire for my shift light?
Last edited by 01snake; Feb 9, 2011 at 09:40 PM.
3rd Gear Member
Joined: Aug 2007
Posts: 670
From: Tulsa, OK
I am just guessing on the shift light, but I would think the same wire would work as long as you have the option to set the light using one cylinder. It shouldn't matter what cylinder you use, as long as you have the correct wire.