Use a test light One wire (hot) will illuminate The other wire (cold) goes to the brake lights will not illuminate
use an ohmmeter it will show the ground or a test light if it lights up it willl be the other wire
i cant get my car out of parkwhen its cold replaced the brake switch still dont work
If the switch is "closed" both wires should be HOT - with switch open one wire should go COLD-- if not defective switch
Use a test light to determine Connect to ground and one side of the switch - if the light illuminates that is the HOT side if light does not illuminate that is the COLD side of switch
1. Bad pressure switch. 2. Bad pressure switch pigtail. 3. The system is low on freon.
turn a/c onif it gets cold it is workingif it dont get cold it is not working
Either a broken wire - faulty switch - or bad ground. You're going to need a test light to find the fault here. Is there power to the hot side of the blower switch? Does power transfer to the cold side when the switch is turned on. Is power reaching the blower. Blowers rarely fail BUT it can happen.
black is power to unit,red connects to cold side of brake light switch,bleu is power out to trailer brakes,and white is ground
The cold side of any wire is the side that doesn't receive any power when the switck is in its normal position. When the switch is pressed then the wire would become live or as they say, hot! This means that the wire has 12volts positive passing though it. Now if you are looking for the brake light signal then you would need to locate the cold side of that system. Keep in mind that you may have to turn the accessory or ignition on if the brake switch indicates no power or hot side without the key in on position. Good luck! Bandalerro
If it is a echo there is a switch. If it is on cold start switch it to run unless it is cold then you should switch it to cold start. There is also a silver switch that you have to flip up.
Brake fluid may be a bit low. Cold weather will contract it, when it warms up it will expand and light will go off. Try adding just a little fluid. If the brake pedal ever feels "mushy", especially in cold weather it also could be a failing master brake cylinder.
If it still blows cold when it is at running temp, check the engine thermostat, its probably stuck in the open position.