Ok number one if you did a proper pdi and caught these mistakes why did you take delivery of it?
Number two a dealer rather you finance it they can make more money on the back end.
Number three if it is a third party part why is that crossroads problem?
And finally if that dealer wont workk with you go to a differant one you will get better reaction from a company than belly aching on public forums
So i suggest put your big boy pants on suck up the cash pride thing call cross roads go up the ladder be nice ask for a differant dealer it will get you further just ask marcus what he does with crybabies.
Put the red lead of the tester on the red wire in the middlee of the fuse panal and the black lead to the white wire and read the voltage.
If it has a deck mount then red lead to the red wire and black lead to the white wire