Need owners manual for Century model 87151 auto battery charger

Question edited for clarity 'year make model' first please.
Question moved to model category.

You are certainly getting your moneys worth today. :>D Up to Question 3. It sounds like you need an auto electrician but try disconnecting the injectors one at a time from my last answer.

Repair and Service Guides

https://www.google.com/search?q=1989+Buick+Century+service+manual

https://www.google.com/search?q=mobile+auto+electrician+near+me

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There's this website www.reliable-store.com
They have books on ALL vehicles.
it covers wiring diagrams, electrical diagrams,
fuse diagram, torque specs, PCV, error codes, fault codes, service info,
repair info, parts info, owner's/service/repair/parts/maintenance manuals etc everything totally..
I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

come up as a mig welder

if not from centrury welder home page

ebay
CENTURY MIG WELDER PARTS amp OWNERS MANUAL 117 020 117 021 117 030 eBay

Don't have that charger, but you can look closely at the wires, and you will find a rib or 2 ribs on the ground(-) and the Positive(+) will be a smooth wire, no ribs. If this isn't the case you will need to take the charger apart and you willl see which is the ground.

you shoul use the car charger

You need to reset the key fob to the car vin... your owners manual will step you through the process

I can find no manual on line for the charger but the basic & most important things I can share with you.

On the charger should be your On & Off switch, possibly 6 volts / 12 volts switch, (you want 12 Volt) some have a meter to show how much amp draw is taking place as it is charging and you'll have to determine that from observation.

MOST important parts: It is best to disconnect the battery you are charging, at least the Negative post. This will speed up the charge process & prevent any mishaps with the electrical system on the vehicle. I prefer the battery completely removed & placed on an insulated material, plastic, wood, rubber, to prevent battery drain by sitting on concrete or the ground.

If you can check the battery first for swelling/cracked case=don't charge! Frozen inside=don't charge! Thaw first. The fumes from batteries charging are explosive & no sparks, or flames should be anywhere near. Upon reinstalling, Negative wire is always last to connect & be sure that everything inside as far as lights & ignition switch are off to prevent excessive sparking when you connect the final cable.

Charging & connecting. I prefer to test unknowns such as the connecting cables to make sure they are what they say they are. You need a multimeter for this but for now, I am expecting they are marked properly for this instruction. You need a Positive clamp , this one usually has Red handles, to connect to the Positive terminal of the battery (marked POS or +) The other cable, generally Black, connects to the Negative terminal (marked NEG or - ) and provides the ground to complete the circuit.

Make sure connections from the charger to the battery are all clean & well attached, then turn ON the charger. This will prevent sparks near the battery. Be sure to turn off the charger once charging is completed, then disconnect the cables from the battery. The unit you are charging with should give you some indication about when you're charged 100%, but these are the basics of charging a low battery. If by chance your charger shuts down on you & stops charging immediately, you either have the terminals reversed, or a shorted battery. good luck

go to any local auto wrecking yard and they may not even charge you for it

Chk in the glove comparment.

maybe but sounds like a couple of lights have burned out,. the owners manual should tell you where the fuse box is located. The dash light for the odometer/gear indicator may be accessible from under the dash, get an auto maintance repair manual from the local auto parts store , perfably a chiltons for about 20.00. It will help u loctae the dash lights and the fuse box more readily.