Question about 1989 Chevrolet G20

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WHERE IS FUSIBLE LINK FOR HEAD LAMP WIRING ON 89 CHEVY G VAN

SPARKED WIRES WHEN INSTALLING NEW HEAD LIGHT SWITCH HEADLIGHTS DO NOT WORK ENGINE SHUTS DOWN WHEN SWITCH IS PULLED PURCHASED A NEW SWITCH STILL NOT WORKING

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I had a similar problem on my '86 G30 class-c motorhome. Turns out, the fusible link is on the main post of the starter solenoid. There is a metal conduit to protect the wiring from the heat of the headers, crispy wires were inside!

Posted on Mar 01, 2009

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On a 1994 Chevy suburban there's no power to anything that would be powered up when the key is on all items except the door locks work i.e. head lights, dome lights. And cigarette


Ignition switch possible or a main fusible link. go to http://www.bbbind.com/free_tsb.html free wiring diagrams .Enter your vehicle info . year , make , model an engine . then under system click on electrical distribution . subsystem -power distribution . Click on the search button ,then the blue link . Check out the wiring diagrams .You'll need to do some voltage testing to find if voltage is missing . This vehicle has eight fusible links ,one feeds the ignition switch . On the fire wall there should be a junction block where all these fusible links are connected to a main wire from the battery . You can try to see if one is burnt by pulling on them , you will feel the insulation stretch if burnt inside .

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I have no headlights, taillights, cluster lights and speedometer has stop working?


Have you checked applicable fuses for everything except head lamps? The headlamps themselves don't use a fuse. Check the battery junction block under the hood, one of your positive battery cables should go to junction block. If several fusible links check them. My info shows red wire carries battery voltage to head lamp switch for headlamps. The headlamp switch has two voltage circuits, mainly, one for the head lamps, for the other lamps that the switch controls, those smaller lamps are fuse protected.

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Where do I locate the fuse of the headlights in a 1984 jeep


Don't believe there is one for headlights. Your jeep is too darn old: I can see wiring diagrams going back to 1986 at a site, so I looked at one for an '86 CJ7. Unfortunately not a complete headlight wiring diagram, however, so you're getting a two bit answer, with inflation worth about 10 cents. lol.

The headlight switch gets power from a fusible link (Fuse link A) that looks like it may be located on the starter solenoid terminal- two fuse links- A & B, there somewhere. But this same fusible link A also supplies power to the fuse block with the park/tail lamps, hazards, brake lights, and a couple others. So if you have stop lights and park lights, then the fusible link is good, so you should have power to the headlight switch. Neither the fuse block, nor the instrumentation diagram, shows any fuses for the headlights. A lot of older vehicles did not have headlamp fuses, because the light switch had a built-in circuit breaker.

My guess is you have a bad dimmer switch, or the connection there may be bad. Or check if you have power to the headlight socket with the light switch on, and if you do, there may be a headlight ground problem.

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If memory serves, this is direct from the battery (hot all the time, key not needed); probably on a fusible link wire. The question should be WHY are the lamps not working? Assuming both lamps are good; the brake light switch or one of it's wires on the top of the pedal must be shorted or the switch has failed. Get a good flashlight and take a close look. Still; most likely you just have two bad lamps. If the headlights are off and the turn-signals are on with the brakes depressed do both filaments work in the lamps? I'm guessing not.

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1984 aprice classic, Headlights, Tail lights, Interior lights not working (shut off while I was driving) Brake lights, blinkers still working... I checked fuses and replaced headlight switch... Still not...


Maybe power got cut going to the headlight switch. I think that would be a fusible link coming right off the battery source and going to the switch. Fusible links were used as power distributors before the era of maxi-fuses and power distribution boxes found in today's cars. Just like fuses, the link is designed to break and stop current flow if power demand is too high, like a short. Sometimes they get old and just give out. When the link goes, the wiring insulation may bubble or melt off some, the link may feel uneven or rough. Fusible links can be cut out and replaced with a similar rated new link. If you have no power to the headlight switch, look for a melted fusible link.

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1 Answer

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Chevy ran a wire from the starter solonoid that powered the headlights. I have found te wire coroded and also there is a fusible link wire itis on the starter solonoid post from the battery>

Nov 27, 2011 | 1997 Chevrolet Astro

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1989 chevy k-1500 headlights taillights parkinglamps dome light and dash lights will not come on and not getting any power to the headlight switch. and have replaced headlight switch and relay and there's...


Usually the power feed to the headlight switch isn't fused. It will come from a fusible link under the hood. On the right side of the firewall there is a black plastic cover, under it are the fusible links. Check here for a possible blown one. I would also suspect the headlight switch may have originally caused it to blow if thats the case. If you have already replaced the headlight switch, replacing the fusible link should repair the lights. Make sure you replace the fusible link with the same gage wire and same length.

Feb 24, 2011 | 1989 Chevrolet S-10 Blazer

1 Answer

My headlights and cab lights stopped working in my 1979 chevy k20. I put in a new headlight switch and a new dimmer switch and they still don't work. I can't see a fuse for the headlights in the fuse box....


Headlights get power straight from the battery via the starter. Remove the wire harness from the headlight switch and use a test light to see if you have power at the large red wire. I'm thinking you don't which means the fusible link down by the starter is bad.
Two of the wires on the solenoid have a rubber plug on them about 6" from the solenoid. Those are the fusible links. One shuts down power to most of the car including the headlight switch and the other shuts down the ingnition system. I forget which is which. Anytime I had one go bad I replaced both, just in case. All you have to do is cut out the rubber plug and splice the two wires together and you are good to go. Just be sure you wrap them up good, heat shrink tube and electrical tape, to keep out water and road grime.
Hope this helps.

Apr 17, 2010 | Chevrolet K2500 Cars & Trucks

1 Answer

79 chevy k10 starter problems


Fusible Links

The engine compartment wiring harness has several fusible links. The same size wire with a special hypalon insulation must be used when replacing a fusible link.
The links are located in the following areas:
  1. A molded splice at the starter solenoid Bat terminal, a 14 gauge red wire.
  2. A 16 gauge red fusible link at the junction block to protect the unfused wiring of 12 gauge or larger wire. This link stops at the bulkhead connector.
  3. The alternator warning light and field circuitry is protected by a 20 gauge red wire fusible link used in the battery feed to voltage regular #3 terminal. The link is installed as a molded splice in the circuit at the junction block.
  4. The ammeter circuit is protected by two 20 gauge fusible links installed as molded splices in the circuit at the junction block and battery to starter circuit.
Other things it MIGHT be are the ignition switch, located on top of the steering column:

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The other thing it MIGHT be is a faulty ignition cylinder (where your key goes into to start the K10).

Check the wire harness on the steering column also.

Oct 28, 2009 | 1983 Chevrolet C1500

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