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Anytime any light [bulb, lamp] stays on indicates that electrical current from whatever the power source [in your case, the battery] is connected to the circuit for that lamp, and is not allowing the current to turn off.
Barring a weird crossover in the wiring, the most common cause is the brake light switch. Nine times out of ten, the switch is simply out of adjustment. Occasionly, the switch is defective, and is "stuck" in the "on" positon.
This adjustment procedure is for vehicles using a mechanical switch located below the instrument panel, usually just above the brake pedal. Some vehicles utilize a pressure switch which usually is mounted on the brake master cylinder, and to my knowledge is not adjustable, and must be replaced if defective.
Most brake light switches are mounted and adjusted by a threaded "nipple" on one end [usually the end opposite to the electrical connector]. By screwing the nipple into, or out of the threaded mounting bracket, the positon of the plunger [which "rides" the brake pedal arm] opens or closes the switch contact points.
With someone else behind the vehicle to observe and report to you, gently screw the switch "OUT" until the light just goes out. Do not press on the brake pedal during this adjustment.
When the observer lets you know that the brake lights have gone out, the switch is properly adjusted, and you should then test for proper operation by firmly pressing on the brake pedal. The brake lights should turn on when the pedal is firmly depressed, and off when the pedal is released.
What else can I help you with?
What causes the brake light to stay on in your 1986 Dodge D150?
possibly a bad brake switch located on the brake pedal assy
What causes loud noise in all gears but fourth in 1986 dodge ram 50 4X4?
Internal transmission failure.
2000 dodge rims on 1986 dodge trucks?
NO The 2000 dodge rims are alittle big than the 1986 .
When was Dodge Dakota created?
Dodge Dakota was created in 1986.
Why would the power loss light on a 1986 dodge Aries keep coming on?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Will an automatic trans from a 1986 dodge van interchange with a 1996 dodge Dakota?
No
When was Nick Dodge born?
Nick Dodge was born on 1986-05-01.
When did David Dodge Boyden die?
David Dodge Boyden died in 1986.
1986 Toyota camery odometer temp in dash clock won't light up but signals break warning light door open light low fuel light do come on how do you fix this?
hit it with a hammer then drive it
What are the release dates for Unnatural Causes - 1986 TV?
Unnatural Causes - 1986 TV was released on: USA: 10 November 1986
What is the fuel mileage for a 1986 dodge Dakota with a V6?
The Dodge Dakota did not come out until 1987
Will cab from 1986 Dodge D-150 fit 1978 Dodge D-150?
Yes
