Common questions

What kind of harness do I need for my 4cyl?

What kind of harness do I need for my 4cyl?

A popular option for Sand Rails, buggies, and anything else you can set a 4cyl into, Swap offers premium Harnesses and ECMs to get the job done. Built with only OEM connectors and TXL wire, we hand build each harness on an actual engine and test it on a dyno to assure proper fitment, function, and concept.

Are there standalone harnesses for the LS1?

We build standalone harnesses as well as full direct factory fit harnesses for the Gen II LT1 engine with both the original PCM and with the 24x conversion utilizing the LS1 PCM! We build direct factory fit harnesses for the 4th gen F-Body as well as for the 1998-2003 S10! Plug, Play, Drive.

Can you build a harness for a GM Ecotec?

The kits come complete with a weatherproof fuse and relay box that you can mount virtually anywhere, then, hook up the battery, key ign, and fuel pump (all wires provided) and your running! We can customize and build a harness to fit your project, just let us know if you have any questions.

Can a carb man buy an EFI harness?

EFI So EASY even a CARB MAN can do it! Buy in monthly payments with Affirm on orders over $50. Learn more Buy in monthly payments with Affirm on orders over $50.

Do you need a harness for an E38 ECU?

Our engine management harness contains any fuses and relays that will be needed, and the required splicing on the consumer’s end of it is fairly basic.

What kind of wiring harness do I Need?

PSI sells Standalone Wiring Harnesses for GM Gen II, III, IV, & V LS/LT based engines and transmissions. These harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec Truck Engines as well as Gen IV (58x) LS2, LS3, LS7, & Vortec and GEN V LT / ECOTEC3 Engines. All PSI Harnesses are Made in the USA.

We build standalone harnesses as well as full direct factory fit harnesses for the Gen II LT1 engine with both the original PCM and with the 24x conversion utilizing the LS1 PCM! We build direct factory fit harnesses for the 4th gen F-Body as well as for the 1998-2003 S10! Plug, Play, Drive.

A popular option for Sand Rails, buggies, and anything else you can set a 4cyl into, Swap offers premium Harnesses and ECMs to get the job done. Built with only OEM connectors and TXL wire, we hand build each harness on an actual engine and test it on a dyno to assure proper fitment, function, and concept.

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Ruth Doyle