FAQs » Frequently Asked Questions

Where can I get the right bulbs?

Automotive lighting is a lot like the light inside your refrigerator. You don’t really think about it until things aren’t working. That’s why our Factory Fit and Classic Update kits include original-replacement lamp sockets. It’s one of the little things that make us unique in the industry.... [ read more ]

1967-68 Mustang Wiper Motor Issue

Problem: Our tech and sales team received reports stating 1967-1968 Mustangs with 2 speed wipers without washers would fail to return to the park position when the wiper switch was turned off. Solution: We assembled all of the 1968 Mustang parts, (wiper switch, motor and washer coordinator)... [ read more ]

I have your Factory Fit engine harness wiring, how do I hook up the wires to my starter motor? I have three posts, two small posts and one large post on my starter solenoid…

Typically, GM vehicles prior to 1982 have starter solenoids with three posts: Post # 1: Battery – This is the large post on the solenoid which is usually found on the center top of the solenoid.  This is the post where the positive battery cable attaches along with any battery feed wires that ... [ read more ]

When trying to start my car, the engine cranks, but will not always start. Occasionally, when the engine gets spinning fast enough and I release the key, the car will sometimes catch and start. The vehicle is original using stock harnesses. What could be my problem?

A: This problem is commonly found on GM vehicles with stock point type ignition system that use a resistor bypass circuit. The bypass circuit provides a full 12 volts to the coil when the vehicle is in the cranking position. There are typically two ways that this was achieved. The first, and most co... [ read more ]

General Motors temperature gauge troubleshooting

Temperature gauge troubleshooting begins with isolating the problem either to the gauge, sending unit, fuse or wiring. As with any electrical troubleshooting it is best to check all wiring connections are clean, tight and free of corrosion. The following process must be preformed with the ignitio... [ read more ]

I’m wiring my 1964-66 Mustang after-market replacement parking light assemblies and the wire color codes on the after-market parking light assemblies do not match the American Autowire 510125 (AAW) 1964-66 Mustang classic update kit wire colors. What color wire on the replacement parking assemblies goes to which color AAW wire?

If you have purchased (shown below) replacement parking light assemblies for your 1964-66 Mustang, the after-market wire colors are Black and Light Blue on the double female connector and a Brown or Tan on the single male connector. To connect the after-market parking assemblies wires to an American... [ read more ]

Should I purchase and install a new fuse box only, recondition my existing dash harness, or purchase a new dash harness?

Purchase and install a new fuse box AAW does not recommend the purchase of a new fuse box for installation by the customer. There are several reasons for this: The replacement of the fuse box is extremely difficult, almost impossible to perform with the dash harness installed in the vehicl... [ read more ]

Can I use my original headlight switch or ignition switch with your Classic Update Series kits?

It is not recommended that original switches be used in any of our kits. In many instances, the method of connection is completely different, as the switches that we include are updated-style units. The amperage ratings on our switches are usually higher than stock so that they will carry the extra ... [ read more ]

Can I hook the orange wire in the front light kit of the Classic Update Series directly to the engine cooling fan?

No, the orange wire in any of our Classic Update Kits is a fused 12v ignition feed that should be used as the “keyed” trigger wire that connects to your cooling fan relay.
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