Sorry for the delay..just saw this....I just went out and took a few pics for you. You should use the same harness in the rear...as for the relay...take your hood off...take out the plastic storage...on the passenger side just past plastic firewall....you should see a group of wires...now Im going from memory but I believe the colored wires are brown/black, green, and grey, this is the harness for the relay. You won;t have a lot of slack but try to find the driest spot possible...(especially if you like to play in the water/mud)to either lay the relay or zip tie it down. any more questions..let me know.