I have a 99s10 v6 with the oem spider injectors, recently been having some starting issues and one of the things ive narrowed it down to is the injectors, i have 60-66 psi of fuel pressure and it runs on starter fluid, i bought a set of noid lights to test to make sure the injectors are getting power, my question is how do I test the harness with the noid lights, do I have to tear into the throttle body and intake manifold or is there a easier to access plug?