If you are looking for a great quality stand-alone engine swap wiring harness, you have found it. Fuel Injection Connection has been dedicated to providing professionally constructed stand-alone electronic fuel injection wiring harnesses since 2004. We have been in the custom fuel Injection business since 1993. We strive for great customer service and have thousands of satisfied customers from all over the globe. You will be a satisfied customer as well. If in the event that you are not satisfied with the quality and look of the harness that you purchase from us, please return it within 14 days and we will refund the purchase price to you. You won’t need to though because these things are fantastic and they perform exactly as needed.

Fuel Injection Connection specializes in General Motors (GM) wiring systems like TBI, TPI, LT-1, LS-1, LQ-9, LQ-4, E38 electronics from 2007 and up through 2014.

Our harnesses are constructed with 100% all new Delphi manufactured connectors, lead soldered splices and thicker jacket GXL automotive wire. GXL wire has a thicker jacket that is more resistant to scuffing and abrasion and more important heat resistance. It is a chemically cross-linked gasoline rated wire that GM has used for years. Other harness manufacturers use thinner jacket (TXL) or even worse, NON automotive grade wire. We tell you this to help show that you can be assured that our harnesses are going to last for as long as you own it. In fact we guarantee the harness that you purchase from us for as long as you own it. Lifetime warranty means that for as long as you own it, if anything is wrong or damaged as a result of poor construction or faulty connectors or terminals etc, you can contact us and we will work with you to get it right, even if that means a replacement harness. Obviously this would not include anything outside of the scope of normal wear and tear.

Our harnesses are also covered for you for that professional quality look and protection. We use the same corrugated slit loom as GM and not the lower heat stuff from auto parts stores. Each seam is taped and secured and these look great.

Each harness that we offer has a little more than 4 feet of main trunk so that you mount the engine control module inside the cab or out of the way from the heat of the engine. Every harness has it own fuse block, Fuel pump relay, OB Diagnostic connector and wiring for misc. items as listed.

The installation of the wiring harness is a snap. Each of the connections in the harness are labeled and will only install at the plug that is designed for. 3 main wires is all you need to connect to run your engine. Battery Positive, Ignition ON and the fuel pump positive wires. There may be secondary wires as listed like SES, Tachometer etc.

Below is a description of the harness that you are buying, please make sure that if you have questions to please let us know before you make your purchase. Please check out or other harnesses at FuelInjectionConnection dot com eBay store.  Thank you, it is a pleasure to serve you.

TBI:

Throttle Body Injection was used by General Motors on many vehicles from 1985 through 1992.

This wiring harness is designed to run on the TBI engines that came out of trucks and cars from 1985 through 1992. The wiring is designed for use with the 1227747 ECM from those models as well. The harnesses all have provision for 700R4 transmission that can be taped off if not used.

The donor vehicle will have the original coil wires needed to connect the coil and power up the distributor. (We can supply those for a small charge of $32 for the set of 2)

Below is a list of the connections that are part of this TBI wiring harness that will plug into your equipment.

ECM connectors (2 Black connectors, 1 24 pin and 1 32 pin)

Electronic Spark Control module

Fuel Pump Relay included in the harness (Includes Relay)

OBD1 Data connector (for checking codes)

2 pin EGR

4 wire small connector that plugs into distributor

Timing Bypass (to set timing)

Oil Pressure sensor switch (not for gauge)

Knock sensor

Oxygen sensor (single wire)

Coolant Temp signal for the ecm

Manifold Absolute Pressure or MAP sensor

Throttle Position Sensor (TPS)

Idle Air Control Motor valve (IAC)

700R4 TCC Lock up

Speed sensor

Fuse Block