Standalone Wiring Harness, 4L60E DBC, Red/Blue PCM, Compatible with 1997-2006 GM LS1 Vortec Engine 4.8 5.3 6.0 L, LS Swap Engine Harness, Stand Alone Wire Harness, Drive by Cable Throttle Body

Seems as if the reviews on these are hit or miss. I definitely had a Hit! Worked well. Had the swap running in a matter of hours not days. Are the connectors and wires of lesser quality… yup. Does it work and save you coin. Yup and yup.

I was doubtful and expecting to have issues with this harness but it works great! I’ve got a 1986 c30 ls swapped truck running great with a 6.0 vortec with this harness with no issues. I also bought a second harness for a future project because I was so happy with it and the price.

A few things to consider when buying this. The injector connectors are different for a stock application. I bought adapters so no biggie there. I traced all wires and found a couple issues. The TPS and MAP sensors l was wired incorrectly at the blue plug. No cutting was required to fix this. I just popped off the blue cover and routed the wires to the correct place using a pin out diagram. For me the price was right and it was an easy fix. Make sure you do this before you add power to your sensors or you will smoke them.

Perfect

This harness has 11 pin outs in the wrong location, both O2 sensor plugs are the female ends for the downstream sensors so they will not plug into anything, connectors are the same as connector on the WRONG sensor itself. The mass airflow connecter is also incorrect. It is an older style 3pin with a separate IAT connector that was never used on the engines this harness is supposed to fit. Ordered too long ago to return so I'll be eating the cost of this one.

Works but need adapters for injectors also has the wrong ends for the oxygen sensors Update finally got it running and misses like crazy throwing all kinds of circuit codes and tps codes poor quality harness not impressed will be buying another one from a different supplier

Great wiring harness with good price!

Yes it work good

Worked good! Make sure you have ignition wire to a port that has power during key on AND cranking!

Good quality harness works like it should

Seems to be fine. Can confirm the injector plugs are wrong tho, have to pigtail them all, that's annoying but whatever. Fan connection isn't clear either (requires separate fan relay setup). Damned good, but not great. Worth the lower cost tho, imo. Edit: noticed somethibg else, it's a 3-PIN MAF connector. This is a giant pain in the neck. 99% of available MAF sensors aren't the old school 3 pin. Trying to sort this out now.

Wrong plugs on injectors. Make sure you check this. Looks like a decent harness other than having different style injector plugs

Injector plugs are wrong. O2 sensor plugs are wrong. Maf sensor isn’t long enough. No wire diagram to even begin to try and fix it. Have to pay to return. Not worth waiting your time or money