Ok so I have some what I believe are ground issues with the wireing on my 4X8 utility trailer. Going to try running a ground from the front ground to each of the tail light assembilies due to it being a tilt bed and not sure its getting a good ground. My lights are made my Peterson and have 4 wire insertion holes in the back, two of them are being used for tail lights and brake lights righ now. My question is if I run a ground wire back there can I just stick it through either of the open holes to achieve the ground I am looking for? or is there a better way? Any insight would be appreciated. Thanks.