instrument cluster problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70short · 08-12-2005, 02:19 AM

I am putting my interior back together (from paint) Cluster is in, here are my symptons.

When I pull the headlight switch out one notch.

red high beam light comes on.
both (LH & RH) turn signal arrows come on half intensity.
fuel gage dropped from 1/4 tank to the empty mark.

When I pull the head light switch completly out (headlights on).

red high beam light goes out.
both turn signal arrows come on full intensity (much brighter).
the fuel gage drives even farther below the empty mark.

In both instances when I turn my turn signals to either left or right the arrows do flash however they stay on. Everthing other than my cluster seem to operate normally. I have tried reseating my plug to the cluster, looking for an open or short (none found). Checking the wiring at the headlight switch (no problems found) HELP PLEASE.

Gary

Longhorn Man · 08-12-2005, 04:45 AM

bad ground

bobs409 · 08-12-2005, 06:34 AM

I agree, bad ground. Run a wire from the metal part of the rear cluster to the metal dash/firewall area.

jhwkns · 08-12-2005, 07:24 AM

Check to make sure all of the panel lights are in securly.

**1970 CST Short Wide** · 08-12-2005, 09:52 AM

The very same thing happened on my truck. It was one of the small ground srews on the back of the panel.

I agree with All above BAD GROUND

70short · 08-12-2005, 05:36 PM

Thank you very much everyone that replied. I grounded the cluster case and everything works great!

Once again THANK YOU VERY MUCH!!!!!!!!!!!!

Gary

silvertonguedevil · 08-12-2005, 08:44 PM

Hey! I've got the same thing going on. I will try this also. This place rocks!!

08-12-2005, 02:19 AM	#1
70short Registered User Join Date: Sep 2003 Location: Boise ID Posts: 609	instrument cluster problems I am putting my interior back together (from paint) Cluster is in, here are my symptons. When I pull the headlight switch out one notch. red high beam light comes on. both (LH & RH) turn signal arrows come on half intensity. fuel gage dropped from 1/4 tank to the empty mark. When I pull the head light switch completly out (headlights on). red high beam light goes out. both turn signal arrows come on full intensity (much brighter). the fuel gage drives even farther below the empty mark. In both instances when I turn my turn signals to either left or right the arrows do flash however they stay on. Everthing other than my cluster seem to operate normally. I have tried reseating my plug to the cluster, looking for an open or short (none found). Checking the wiring at the headlight switch (no problems found) HELP PLEASE. Gary __________________ "72" Red CORVETTE 4-speed 350 "70" Chevy Short Bed early stages of resto. Edel 600 cfm carb Weiand Stealth Intake HEI shorty Headers 4/2 Drop 295 50R 15 TOYO on 10 inch wide corvette rally rims at all 4 corners. "CHEVY RULES"

08-12-2005, 06:34 AM	#3
bobs409 1969 Custom 30 wrecker Join Date: Sep 2001 Location: Pottsville, Pa Posts: 2,611	I agree, bad ground. Run a wire from the metal part of the rear cluster to the metal dash/firewall area. __________________ Bob 63 Impala 283/PG/3.36 (under restoration) 66 Impala 327/PG/3.36 66 Chevelle SS 409/M22/3.55 69 Chevelle 307/PG/3.08 (future restoration) 69 C10 short stepside 454/TH350/3.73 69 Custom 30 tow truck 350/4 spd/4.10 (resto done, CRUISIN TIME!) 71 Cheyenne 20 fleetside 350/4 spd/4.10 71 Chevelle 6/PG/3.08 72 Chevelle 454/M21/4.10

08-12-2005, 07:24 AM	#4
jhwkns Registered Cruiser Join Date: May 2002 Location: Las Vegas NV Posts: 2,230	Check to make sure all of the panel lights are in securly. __________________ I intend to live forever. So far, so good.

08-12-2005, 09:52 AM	#5
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,193	The very same thing happened on my truck. It was one of the small ground srews on the back of the panel. I agree with All above BAD GROUND __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

08-12-2005, 05:36 PM	#6
70short Registered User Join Date: Sep 2003 Location: Boise ID Posts: 609	Thank You Thank you very much everyone that replied. I grounded the cluster case and everything works great! Once again THANK YOU VERY MUCH!!!!!!!!!!!! Gary __________________ "72" Red CORVETTE 4-speed 350 "70" Chevy Short Bed early stages of resto. Edel 600 cfm carb Weiand Stealth Intake HEI shorty Headers 4/2 Drop 295 50R 15 TOYO on 10 inch wide corvette rally rims at all 4 corners. "CHEVY RULES"

08-12-2005, 04:45 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	bad ground

08-12-2005, 08:44 PM	#7
silvertonguedevil Senior Member Join Date: May 2004 Location: Seaside, Oregon Posts: 1,789	Hey! I've got the same thing going on. I will try this also. This place rocks!! __________________ -Greg My Chevy trucks, past and present: 1962 C10 SB Fleetside 1964 C10 LB Fleetside BBW 1966 C10 SB Fleetside 1966 C10 SB Fleetside BBW 1968 C10 SB Fleetside 1971 C10 LB Fleetside 1971 C10 SB Fleetside 1972 C10 SB Fleetside Cheyenne 1972 C10 SB Fleetside Cheyenne Super 1972 C10 LB Fleetside Cheyenne Super 1974 C20 Cheyenne 1979 K5 Blazer Cheyenne 1982 K10 SB Fleetside Custom Deluxe 1982 K10 SB Fleetside Scottsdale 1986 C10 SB Fleetside Silverado 2008 Silverado 1500 4x4

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