Grounded wire

1994 JAGUAR XJS

75,000 MILES • 4.0L • 6 CYL • 2WD • AUTOMATIC

OKLA-OKI

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5 POSTS
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There is a small black wire on the positive side of the coil which is grounded.

When you turn the ignition on, the grounded wire is going to cancel out the ignition.

Why is the black wire grounded?

Thank you for your response.

Jan 22, 2019 at 2:14 PM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Hi and thanks for using 2carpros.com

There shouldn't be a black on the + side. Take a look at the attached pictures. One is a schematic of the wiring to the coil. Pic 2 shows wires to the coil.

Let me know if this helps or if you have other questions.

Joe

Images (Click to enlarge)

Jan 22, 2019 at 8:55 PM

OKLA-OKI

MEMBER
5 POSTS

Thank you for your reply. Can you please furnish me with a WIRING DIAGRAM FROM THE IGNITION TO THE COIL. This, I believe will be most helpful at this point to confirm my problem. THANK YOU for your assistance, it is much appreciated.

Jan 27, 2019 at 9:16 AM

JACOBANDNICKOLAS

CERTIFIED EXPERT
110,175 POSTS

Welcome back:
I have attached several pictures below. The wiring schematics run over a couple pages, so I had to break them down to get all the information.

What I did was to overlap from one pic to the next so you can follow them. These pictures include all engine controls.

To help you first locate the coil, see picture 4. It is on the lower left side of the schematic.

Let me know if this helps or if you have other questions.

Take care,

Joe

Images (Click to enlarge)

Jan 27, 2019 at 4:50 PM