4L80E external harness

G’day Gents,

I’ve been having an intermittent problem with the autobox in my car and I’m pretty sure it is a failing external wiring harness affecting the electronic control of the tranny.

Has anyone had any luck sourcing a replacement harness or has anyone had any success getting an existing harness rebuilt?

If I could find a supplier of the external multi pin plug I’d have a go building one myself.

I should mention that my car is 1995 XJ12.