Fatmax headlamp turns off as soon as you turn it on

You can buy O-rings by size from Home Depot, Hardware stores or any automotive outlet.

https://www.google.com/search?q=Fatmax+1000+parts

..

There is a small pressure transducer inside the unit that measures the pressure. If the unit has been jarred around a lot or has gotten moisture in it, the part has failed.

It is a known issue!

https://www.google.com/search?q=stanley+fatmax+powerit+1000a+wont+turn+off

..

Question edited for clarity.

The LED Area Light or the Unit display. The backlit display always stays on to alert you to the internal battery status, so that when you come to use it, it should be fully charged.

https://www.manualslib.com/manual/2188388/Stanley-Fatmax-Pp1dcs.html?page=2&term=light&selected=1#manual

stanley fatmax jumpstarter 1000A light wont turn off?

It's probably the switch , but testing to know for sure is alwasy a good idea .

Headlamps Inoperative - High Beams
Step
Action
Value(s)
Yes
No
1
Did you perform the Daytime Running Lamps (DRL) System Check?
--
YES - Go to Step 2
NO - Go to Daytime Running Lights (DRL) System Check
2
Disconnect the turn/hazard headlamp switch connector C1.
Connect a fused jumper between terminal B of the turn/hazard headlamp switch assembly harness connector C1 and ground.
Do the high beam headlamps operate?
--
YES - Go to Step 3
NO - Go to Step 4
3
Replace the turn/hazard headlamp switch assembly.
Did you complete the repair?
--
Go to Daytime Running Lights (DRL) System Check
--
4
Repair the open in CKT 1200 between the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?

Daytime Running Lights (DRL) System Check
Step
Action
Normal Result(s)
Abnormal Result(s)*
1
Turn the headlamp switch to the HEAD position.
Turn the headlamp dimmer switch to the LOW position.
The low beam headlamps are ON.
The high beam headlamps are OFF.
Headlamps Inoperative - Low Beams
2
Turn the headlamp switch to the HIGH position.
The high beam headlamps are ON.
The high beam indicator is ON.
The low beam headlamps are OFF.
Headlamps Inoperative - High Beams
3
Turn the headlamp switch OFF.
Turn the ignition to ON.
Disengage the parking brake.
The high beam headlamps come ON at a reduced intensity in approximately 30 seconds.
Daytime Running Lamps (DRL) Inoperative, Headlamp Switch Operates Normally
* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.

Maybe a stuck relay or bad headlamp switch ! You may have a DTC - diagnostic trouble code stored in the BCM - body control module ! These codes do not turn on the check engine light ! There could be a yellow wrench symbol on the instrument cluster or a service vehicle soon light or a message in the message center if yours has one ! You would need a professional grade scan tool to check for codes in the BCM !
DTC B2578 Headlamp Relay Control Circuit High.
DTC B2577 Headlamp Control Circuit Low.
DTC B2575 Headlamp Control Circuit !
If no codes were found you would need to do some tests ,such as these .
If no codes Headlamp Low or High Beams Always On test

2

1. Ensure that the ambient light sensor is receiving enough light to simulate daylight conditions.
2. Place the headlamp switch in the OFF position.
3. Turn ON the ignition, with the engine OFF.
4. Turn OFF the ignition.

Do the headlamps operate normally?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3

3

Are the headlamps ON with the ignition key ON, and then turn OFF when the ignition key is placed in the OFF position?
Go to Step 4 yes
Go to Step 5 no

4

Test the headlamp relay control circuit of the body control module (BCM) for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 15 yes
Go to Step 10 no

5

Disconnect the headlamp relay. Refer to Relay Replacement in Wiring Systems.
Do the headlamps turn OFF?
Go to Step 8 yes
Go to Step 6 no

6

Disconnect the headlamp switch connector.
Do the headlamps turn OFF?
Go to Step 7 yes
Go to Step 11 no

7

Test the headlamp relay output circuit of the headlamp relay for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 15
Go to Step 9

8

Inspect for poor connections at the harness connector of the headlamp relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems?
Did you find and correct the condition?
Go to Step 15
Go to Step 12

9

Inspect for poor connections at the harness connector of the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 15
Go to Step 13

10

Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 15
Go to Step 14
This mite be a problem you would want to leave to a ASE certified Technician who has the tools an knowledge ! Probably could be fix in less then an hour !

Your headlamp bulbs are replaced from the back of your headlamp unit. You have to raise the hood and look toward the center of your headlamp, some are hard to get to. You will see a twist lock that holds the bulb in place. The twist lock turns about 1/4 to a 1/2 turn the the lockand it will pull back. You may have to wiggle the bulb some to get it to come out if it has never been replaced. The wires will only plug in one way so don't worry about that, usually when you replace one bulb the other will go out soon after but I have seen them last longer. Take care and good luck, If you go to a godd Auto Parts store they will usually assist you in changing this. Remember also that the halogen bulbs should not be touched by your hand as the oil from your skin will make the bulb blow and or give it a short life. Hope this was helpful, Roger

I dont know that much about cars m8, but that sounds to me like you may need your alternator looking at!!!

It's as if your loosing power out of your battery or something!

Regards Jemma

99 - 04 grand am.

I had the "service vehicle soon" light come twice with in 1 year. First the heald light bulbs were gone. Replaced the head light bulbs and after 2 starts the "service vehicle soon" light was gone.

The second time the DRL - #194 amber bulbs were gone. Replaced these and the "service vehicle soon" light was gone after 2 starts. The DRLs are housed in the headlamp housing, the tiny bulbs beside the head light.