Speedway 1985-1992 GM TBI Engine EFI Wiring Harness
Take the fear out of electronic fuel injection! These engine wiring harnesses are designed to make your engine transplant effortless. Each new harness contains in-depth application-specific instruction sheets, clearly marked factory GM connectors, labeled GXL jacketed wire, GM color coding, and pre-fitted corrugated slit loom for an extra value and professional look. All un-needed emissions wiring is eliminated to make the install as simple and reliable as possible.
- Made from premium grade GXL jacketed automotive wire
- Most wiring is larger gauge than stock application for durability
- No splices to reduce points of failure
- All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
- Harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
- All electrical connectors are made by Delphi or Packard and are direct fit for GM cars and trucks
- Can be installed to run engine in 20 minutes, but figure 4-6 hours for a professional installation
- OBD1 diagnostic port for connection to scanners and tuning tools
- Made in the USA.
- Has connections for 700R4 transmission.
- Common aftermarket fuel pump and fan relays are included. Fan relay has a load rating of 30 amps so it can handle most fans, however if the fan requres more current to operate then the relay can be replaced with a 40 amp relay from any auto parts retailer.
- These harnesses feature all of the connection points necessary to run the engine and transmission if applicable. The emission equipment has been eliminated and only the needed connections to run the engine and transmission are incorporated.
- 1985-1992 Throttle Body Injection (TBI)
- Standard length harnesses are 54" from the back of the engine to the PCM connectors.
WarrantiesThis harness is covered under warranty for the lifetime of the original owner against defects in workmanship within the wiring harness only, not time, or any damage in result of defective workmanship of the wiring.
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
More Like This
Speedway 1997-1998 LS1 Engine Wiring Harness
Speedway 1999-04 Corvette LS Conversion Wiring Harness
Speedway 2007-2008 LS2/LS3/LS7 Engine Wiring Harness
Speedway GM Engine Wiring Harness, 1999-02 LS1
Speedway 1999-2002 LS1 Engine Wiring Harness, Extended
Speedway 2004-2008 Vortec V8 Wiring Harness, Extended
Speedway 1994-1997 LT1 Engine Wiring Harness
Speedway 1999-2003 Vortec V8 Wiring Harness
Speedway 1997-1998 LS1 Wiring Harness, Extended
Speedway 2004-2008 Vortec V8 Wiring Harness
Q & A
Speedway Motors and Classic Trucks called on Painless Wiring to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.
Speedway Motors employee Pat O. talks about the King Bee Headlight and a few conduit options available at Speedway Motors.
Pat shows off how easy wiring your LS can be with our LS wiring kit.
Unbox our most popular wiring harness with Tim.
Speedway Motors employee Pat O. is back to talk Ford Automatic OverDrive Kickdown brackets and kits.
Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!
Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.