Best Answer

Change the headlight switch.

If the switch fails to fix the problem, you may want to pull the headlamps out and check the connection at the back. Lastly, inspect the complete headlight wiring harness for missing insulation, exposed or frayed wires, or loose firewall connection.

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โˆ™ 2008-07-19 06:52:14
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Q: How do you fix a 1966 Ford Mustang if the lights do not always come on when you pull the switch?
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Related Questions

Why is it when you turn on headlights the parking lights go off and the right headlight goes dim on a 1966 mustang?

Bad ground or bad switch

Why don't backup lights work on 1966 mustang after replacing neutral safety switch?

Even after replacing the switch it needs to be aligned with the shifter. Put the car in reverse and then have someone watch the lights as you loosen the switch and then rotate it slightly forward or backwards. once the lights come on, secure it in position.

Why don't the head lights work on my 1966 mustang all other lights work?

I would guess the headlight dimmer switch on the floor board is bad or has a loose wire. Possibly the head light switch is bad. The headlight switch has a separate circuit breaker for just the head lights.

Where is the emergency light switch located for 1966 mustang?

in glove box

How do you fix the brake lights on a 1966 mustang?

How the brake lights work on a 66 Mustang is very simple. Power goes from the headlight switch to the brake light switch, then through the turn signal switch and back to the brake lights. There is no fuse in that system. There is a self resetting circuit breaker in the headlight switch, but, if that was tripped, none of the lights on the car would work. The first thing to check is the brake light switch itself by bypassing it. Unplug the connector from the switch and run a jumper from from one slot in the connector to the other. If the brake lights come on, replace the brake light switch. If they don't, the problem is either a wire has lost continuity or there is a problem in the turn signal switch.

Why dont The brake lights on my 1966 Mustang not work and I have already replaced the switch?

Check the bulbs- they are double filamented with the smaller for brake lights Check the fuse Check the sockets for power and ground Check the sockets for corrosion

What was the original sticker price of a 1966 mustang?

The Ford Mustang is and has always been one of Ford's most popular model cars. In 1966 the average cost of a moderately equipped Mustang was right around 2450.00.

How do you remove the headlight switch from a 1966 Ford Mustang after the knob and post are removed?

Unscrew bezel and switch should slide out through the rear (under dash)

Where is the switch box for back up lights on a 1966 dodge coronet?

look on the side of the transmission.

Why don't the taillights and dash lights for a 1966 Corvette come on?

Check fuse Could be a bad switch

How to fix brake lights on 1966 Thunderbird?

check your fuses and the brake light switch above the pedal

How do you check matching numbers for a mustang?

ford mustang 1966

What is the top speed of the 1966 Ford Mustang?

The top speed for the 1966 Ford Mustang is around 150 to 170

1966 mustang how much does it weigh What is the length width and height?

How fast does the 1966 Ford Mustang Shelby GT 350 fastback?

How fast does the 1966 Ford Mustang Shelby GT 350 do what?

Where can one purchase Ford Mustang parts for a 1966 Mustang convertible?

Research has shown that there are a number of options available for purchasing parts for a 1966 Ford Mustang. These parts can be found on eBay, CJ PonyParts, and Dallas Mustang.

Where is the starte netural switch for your back up lights on your 1966 ford mustang?

The back up light switch is mounted directly to the transmission. When you engage the shifter into reverse, the shifter physically actuates the switch's button, turning the back up lights on. It's a simple, but effective little system.Note: If you're doing a T5 swap or a similar project, the original back up light switch bracket will not adapt to the new transmission. You will need to have one custom fabricated.

Will a 1967 mustang manual brake master cylinder bolt up to a 1966 mustang firewall?

Yes, but you will need to use the original push rod from the 1966 Mustang as it is shorter than the 1967.

Where is the backup light switch on the 3 speed transmission in a 1966 Mustang?

Those switches are all located where the shifter attaches to the top of the transmission, on the shifter iself.

Can you put a 1966 Chevy alternator in a 1966 Ford Mustang?

NO. It will not bolt up.

What is a treadle?

A Treadle is a 1966 in Mustang Cars.

When was the first mustang gt made?


Why won't the brake lights work on my 1966 Dodge?

Check the fuse, check the bulbs, check the brake light switch, in that order.

Why do your parking lights go off when you turn on your headlights on a 1966 international?

The headlight switch may be at fault or the wiring has been altered.

What is the difference between a 1965 mustang and a 1966 mustang?

One of the most notable change for 1966 Mustang was the revised grille the revered running horse centerpiece also became fully floating in 1966. Additional brightwork adjustments included making hood lip trim and rocker moldings standard for the base model. Completing the extior makeover were typically redesigned wheel covers,a restyled gas cap in back,and new standard backup lights