Holley EFI harness adjustment

There is info on them at the Holley forum AS WELL AS where to get them other than Holley at a fraction of the price. Otherwise, I would just CAREFULLY splice them with heat shrink or good quality butt crimps. If you do any of this, stagger them in length so the splice does not form a ball/ bulge

I haven't looked in awhile, but you should be able to download documentation, free, from Holley.