Not if you use an HCO.

 

@C. Ludwig Thank you that is great, then i will be using one for the IGN-1A coils and one HCO for the injectors, which is currently how the main Haltech harness is configured. Then just the last question, in my main harness i have two black ground cables which says "BATTERY GROUND LOW-CURRENT CAN DEVICES, DIGITAL SENSORS OUT DO NOT CONNECT TO ENGINE, CHASSIS, OR BATTERY GROUND" must the "B" pin be connected to this ground on the Haltech cable and "C" to the rotor housings and "D" directly to the battery?

 

I’ve revised how I wire these coils after seeing Shane Tecklenburg’s video on the subject a while back. Look that up on YouTube for a proper explanation of why.
A- Signal
B- ECU sensor GND (Haltech B/W wire)
C- GND to rotor housing
D- Battery GND
E- 12V+

 

@C. Ludwig Wow, thank you for the great help and support much appreciated. Now it is time to start with the wiring.

 

Hi

@C. Ludwig hope all is well. Quick Question?

Can i connect all 4 IGN1A coils to one B- ECU sensor GND (Haltech B/W wire) or does each of the coils need their own sensor gnd?

 

Yes. Just a single wire spliced to all 4 coils.

 

@C. Ludwig Thanks for all the help