Classic/Antique Car Repair/Chevrolet wiring

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Expert: - 8/7/2009


Question
I have a 66 SS396 chevelle and the wires are missing for the neutral safety switch. where do the wires go to and where do they come from so I can replace them without a new wiring harness?

Answer
Two of the terminals are for the neutral start portion of the switch and two are for the back up lights. they can be identified using an ohm meter. The neutral start will close when the shifter is in neutral and park while the two terminals for the back up will show continuity when the shifter is in reverse. There should be a purple wire coming from the ignition switch. This wire usually runs from the start terminal of the ignition to the Neutral start switch. Then from the neutral start switch to the starter solenoid "S" terminal. According to my wiring diagram a dark green wire should come from the directional/back up light fuse to one side of the back up switch. A light green wire then runs to the back up lights.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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