Wiring for Crate LS3

[paulk68]

Hey guys starting to research what wiring kit I should use on my crate motor LS3 480HP. can anyone make some suggestions for me? I was looking at the GM connect and cruise since it comes with pedal and everything but also heard the Holley terminator stuff is really good. please let me know what you guys suggest.
Thanks

[randy]

First time I’ve ever wired a car and I instead the connect and cruise with ease.

[dhutton]

I recommend the GMPP connect and cruise. Simple plug and play.

I’ve used GMPP, Speartech, and PSI. They all have their merits but I feel GMPP might be best for you Paul.

There is a guy on the Camaro forum using Holley for his first swap. He has posted a lot of questions.

Don

[paulk68]

Thank you all so much I think I will go GMPP path!

[tubbed69]

Also call Shaun Carter @SMC Performance,he does a kit like GM but it is easier and even cleaner look.I have bought several of these and are so easy to install.They are plug and play with built in relays for fans and fuel pump,throttle pedal,bosses for 02 sensors,mass air flow sensor and mounting kit.

[130fe]

I used the GMPP harness. I haven't had any issues with it in 8 years but the only down fall is you only have one fan output unless you add the PCMOFNC fan add on kit. Kind of bulky but I don't mind.

[tylert11]

Originally Posted by paulk68

Hey guys starting to research what wiring kit I should use on my crate motor LS3 480HP. can anyone make some suggestions for me? I was looking at the GM connect and cruise since it comes with pedal and everything but also heard the Holley terminator stuff is really good. please let me know what you guys suggest.
Thanks

We use FiTech Ultimate.We hadn't trouble

[pannetron]

I'm happy with the GM crate engine harness I used on my LS9-clone custom build. The only changes I made were adding pins to the ECU connectors to bring out the reverse lockout (RLO) output and inputs for a supercharger inlet MAP sensor.