ls1 engine harness
Here's some info..it's more about the sensors than the plugs. http://www.chevythunder.com/ls1_page_1.htm
You should be able to lay out the harness, and by process of elimination, figure it out. driver inj & coil plugs/pass inj & coils/ then, the short ones to rear of manifold..etc. go behind the manifold.
Are the sensors already installed? This would help match the plugs.
When I gave my answer above, I had forgotten that my conversion harness had been stripped of alot of the wiring, therefore making my job much easier than yours. Hope this helps.



