Best way to get to the fuse box. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

86swb · 03-25-2020, 01:45 PM

On my 1984 Chevy Silverado all the dash lights quit working and also the oil pressure gage now is not working. They worked just fine after I installed the LED bulbs. Put in OE blubs in turn signal and they work fine. Is this a fuse problem and what is the best way to change bad fuse? "Also the clock quit". Thanks

**TKCR** · 03-25-2020, 04:03 PM

I would check the ground first. The fuse box is just a matter of getting down under the dash and looking. It could also be your printed circuit on the back of the cluster.

86swb · 03-25-2020, 09:47 PM

Where would I find the ground? It seems the older I get, the harder it is to figure this out myself.

86swb · 03-26-2020, 01:48 PM

With the dash lights (LED) all stop working together and also the oil pressure and clock stop at the same time. Turn signal has new OE blubs installed and they work fine. I know where the fuse box is but just can not get to the fuses to check them out. Does this sound like one bad fuse or ground as TKCR said? The LED's did all work when I first tried them out and also the clock and oil pressure gage worked fine.

**TKCR** · 03-26-2020, 02:07 PM

Your going to have to take some parts off to get to the fuse box. The air vent tube blocks it. Also, the left vent and bezel. The ground is on the side wall where the air vent is. Here’s a pic, it’s hard to see because I have some sound proofs in there.
For the fuse, I can’t remember, your going to have to look up the schematics. But I believe the clock runs separately from all those other parts you said aren’t working now. My truck is tore apart right now, so if you need better pics.

**TKCR** · 03-26-2020, 03:33 PM

https://67-72chevytrucks.com/vboard/...ash+light+fuse

86swb · 03-26-2020, 05:00 PM

Thanks TKCR but I have not changed any fuses so I should have all the right fuses. I have had this truck for the last six years. Thanks for the help.

**hatzie** · 03-26-2020, 05:05 PM

If you put some cardboard on the ground and kneel on it you can get to the fuses in the fuse panel pretty easily leaning into the cab.

If you need to get to the wiring in the back it gets a little more exciting but not too bad.

The instrument panel grounds are attached to the LH kick panel above the Parking Brake Pedal assembly. The early rigs have a ring terminal on a screw. The later trucks have a buss bar with 1/4 disconnect tabs.

86swb · 03-26-2020, 11:30 PM

OK, thanks

Pontiac1976 · 03-29-2020, 11:06 AM

It might be as said the printed circuit board or the printed circuit board main plugin was not tight or got pop out. The grounds. first one on the cab is on a side of the left under dash near the headlight switch about 35% angel A-Pillar, make sure there not rust on them or lose. The head light grounds rad support near the back side of the head lights, batt to frame rail by batt. The pass side block to cab at rear of motor (all v8). The rear lights I forget what side box, as I had a flat bed for so long. The gas tank sending unit to the frame truck trans side of the tank.

Ziegelsteinfaust · 03-30-2020, 03:34 PM

Dont led lights need a special no load flasher? I have only used them for aux lighting, and not bulb replacement.

https://www.summitracing.com/parts/prf-80230

**Palf70Step** · 03-31-2020, 07:58 AM

Quote:

Originally Posted by Ziegelsteinfaust

Dont led lights need a special no load flasher? I have only used them for aux lighting, and not bulb replacement.

https://www.summitracing.com/parts/prf-80230

Far as I know, only if all the bulbs are LEDs. If only dash is LED, and outside bulbs are normal it should be OK.

**Palf70Step** · 03-31-2020, 08:02 AM

One thing to remember about LED bulbs is they are polarity sensitive. They must go in the correct format. At least mine did. I had to figure out polarity of the bulb and the polarity of the circuit board. Not sure if you had a bunch in wrong if it wound effect the whole grounding circuit or not. I tend to think its a combination of that and something deteriorated in the grounding section of the circuit board on the back of you gauge cluster. If it is original it probably has a crack or too in it.

Pontiac1976 · 04-02-2020, 04:40 PM

I be leave if you electronic flasher with the( board in it) for 8 or 10 lights you should be ok( for towing). I read that some where years ago. If some double check that to confirm.

03-25-2020, 01:45 PM	#1
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Best way to get to the fuse box. On my 1984 Chevy Silverado all the dash lights quit working and also the oil pressure gage now is not working. They worked just fine after I installed the LED bulbs. Put in OE blubs in turn signal and they work fine. Is this a fuse problem and what is the best way to change bad fuse? "Also the clock quit". Thanks __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS Last edited by 86swb; 03-25-2020 at 01:57 PM.

03-25-2020, 04:03 PM	#2
TKCR Senior Member Join Date: Oct 2014 Location: Ohio Posts: 6,853	Re: Best way to get to the fuse box. I would check the ground first. The fuse box is just a matter of getting down under the dash and looking. It could also be your printed circuit on the back of the cluster. __________________ FB Page for my Seats Belts https://www.facebook.com/73-87-Chevy...9439407476735/ Restoring Seatbelts: http://67-72chevytrucks.com/vboard/s...d.php?t=809750 SOLD My 86 Build:http://67-72chevytrucks.com/vboard/s...d.php?t=654972 Past Restored Bench Seats:http://67-72chevytrucks.com/vboard/s...d.php?t=715398 PayPal link to pay for your items: https://www.paypal.me/TKCR

03-25-2020, 09:47 PM	#3
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: Best way to get to the fuse box. Where would I find the ground? It seems the older I get, the harder it is to figure this out myself. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

03-26-2020, 01:48 PM	#4
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: Best way to get to the fuse box. With the dash lights (LED) all stop working together and also the oil pressure and clock stop at the same time. Turn signal has new OE blubs installed and they work fine. I know where the fuse box is but just can not get to the fuses to check them out. Does this sound like one bad fuse or ground as TKCR said? The LED's did all work when I first tried them out and also the clock and oil pressure gage worked fine. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

03-26-2020, 02:07 PM	#5
TKCR Senior Member Join Date: Oct 2014 Location: Ohio Posts: 6,853	Re: Best way to get to the fuse box. Your going to have to take some parts off to get to the fuse box. The air vent tube blocks it. Also, the left vent and bezel. The ground is on the side wall where the air vent is. Here’s a pic, it’s hard to see because I have some sound proofs in there. For the fuse, I can’t remember, your going to have to look up the schematics. But I believe the clock runs separately from all those other parts you said aren’t working now. My truck is tore apart right now, so if you need better pics. Attached Images __________________ FB Page for my Seats Belts https://www.facebook.com/73-87-Chevy...9439407476735/ Restoring Seatbelts: http://67-72chevytrucks.com/vboard/s...d.php?t=809750 SOLD My 86 Build:http://67-72chevytrucks.com/vboard/s...d.php?t=654972 Past Restored Bench Seats:http://67-72chevytrucks.com/vboard/s...d.php?t=715398 PayPal link to pay for your items: https://www.paypal.me/TKCR

03-26-2020, 03:33 PM	#6
TKCR Senior Member Join Date: Oct 2014 Location: Ohio Posts: 6,853	Re: Best way to get to the fuse box. https://67-72chevytrucks.com/vboard/...ash+light+fuse __________________ FB Page for my Seats Belts https://www.facebook.com/73-87-Chevy...9439407476735/ Restoring Seatbelts: http://67-72chevytrucks.com/vboard/s...d.php?t=809750 SOLD My 86 Build:http://67-72chevytrucks.com/vboard/s...d.php?t=654972 Past Restored Bench Seats:http://67-72chevytrucks.com/vboard/s...d.php?t=715398 PayPal link to pay for your items: https://www.paypal.me/TKCR

03-26-2020, 05:00 PM	#7
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: Best way to get to the fuse box. Thanks TKCR but I have not changed any fuses so I should have all the right fuses. I have had this truck for the last six years. Thanks for the help. __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

03-26-2020, 05:05 PM	#8
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,912	Re: Best way to get to the fuse box. If you put some cardboard on the ground and kneel on it you can get to the fuses in the fuse panel pretty easily leaning into the cab. If you need to get to the wiring in the back it gets a little more exciting but not too bad. The instrument panel grounds are attached to the LH kick panel above the Parking Brake Pedal assembly. The early rigs have a ring terminal on a screw. The later trucks have a buss bar with 1/4 disconnect tabs. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 03-27-2020 at 06:40 PM.

03-26-2020, 11:30 PM	#9
86swb Born a Chevy Man Join Date: Apr 2005 Location: Navarre, Florida Posts: 10,221	Re: Best way to get to the fuse box. OK, thanks __________________ John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 1986 Chevy SWB Silverado 1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) CHEVY, American made w/pride! If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS

03-29-2020, 11:06 AM	#10
Pontiac1976 Registered User Join Date: Oct 2015 Location: Ottawa, Ontario, Canada Posts: 750	Re: Best way to get to the fuse box. It might be as said the printed circuit board or the printed circuit board main plugin was not tight or got pop out. The grounds. first one on the cab is on a side of the left under dash near the headlight switch about 35% angel A-Pillar, make sure there not rust on them or lose. The head light grounds rad support near the back side of the head lights, batt to frame rail by batt. The pass side block to cab at rear of motor (all v8). The rear lights I forget what side box, as I had a flat bed for so long. The gas tank sending unit to the frame truck trans side of the tank. __________________ 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.

03-30-2020, 03:34 PM	#11
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,558	Re: Best way to get to the fuse box. Dont led lights need a special no load flasher? I have only used them for aux lighting, and not bulb replacement. https://www.summitracing.com/parts/prf-80230

03-31-2020, 08:02 AM	#13
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,608	Re: Best way to get to the fuse box. One thing to remember about LED bulbs is they are polarity sensitive. They must go in the correct format. At least mine did. I had to figure out polarity of the bulb and the polarity of the circuit board. Not sure if you had a bunch in wrong if it wound effect the whole grounding circuit or not. I tend to think its a combination of that and something deteriorated in the grounding section of the circuit board on the back of you gauge cluster. If it is original it probably has a crack or too in it. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

04-02-2020, 04:40 PM	#14
Pontiac1976 Registered User Join Date: Oct 2015 Location: Ottawa, Ontario, Canada Posts: 750	Re: Best way to get to the fuse box. I be leave if you electronic flasher with the( board in it) for 8 or 10 lights you should be ok( for towing). I read that some where years ago. If some double check that to confirm. __________________ 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.



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