Well i just bought a arospeed volt stab. and the instructions said that the red wire has to be cnected to the positive of battery and the blue one in a car body ground. Then i went to ebay to see how much it coast and the photos that they showed, the blue one was on the negative pole of the battery. Then they explain the instalation process and they said that the blue wire has to be conected on the negative pole.
Where the h!!l am i supose to put it
Please tell me Thanks

 

Come on guys help me i know there're lots of guys that know more than me out there

 

return it, its a scam

 

either works, the blue one is obviously for the ground, the neg term on the batt and the chassis are both grounds. either will work

 

the car itself is a negative ground. Personally id use the car battery, its direct. The frame of the car actually eventually goes to the battery anyways. Thats why people use ground wires silly!!!

 

Thanks guys!!!!