I used the vacuum line as a "chase" for the wiper wiring. �Be sure your windshield frame has a good ground to the tub. �The pivot point of the windshield, and the hold down clips are not the best conductor for a ground. �Also, if your wiper motors are mounted on rubber vibration dampners, be sure to run a ground from the motor housing too. I actually formed a larger vacuum line so that I could pull a negative with the "+" voltage wire. �Most of "us" would see the difference in size, but most of "them" won't. My Willys is not "correct", but I have upgraded where it suits me, and my needs. Jim
