with 4 way flashers on, stuff goes crazy??hep me - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**crossy** · 04-03-2006, 09:54 PM

All the electrical stuff on this 86 works OK (except dash light dimmer) UNLESS I try to turn on the 4 way flashers. at that point if i hit the brake a front park light will come on- dash lights go out - and other assorted nightmares. The switch is JUST a switch inside the column right?? or is it one of those nightmare multi-task switches and it's prolly shorted out inside making the other things go nutty. ANYONE have this before, or as usual ,is it JUST ME

DAVE

**Captkaos** · 04-03-2006, 11:34 PM

I HATE electrical problems with a PASSION!!! I honestly haven't had one do that before. I don't know if I should congratulate you or not. With how the turns are on these, I don't care to guess. I had one that the blinkers were going screwy on me and finally found that it had a bad ground in the rear harness. I am guessing a short too, but no clue where to check, but here is a wordy bump for ya!

boxrodz · 04-04-2006, 02:08 AM

Quote:

Originally Posted by crossy

All the electrical stuff on this 86 works OK (except dash light dimmer) UNLESS I try to turn on the 4 way flashers. at that point if i hit the brake a front park light will come on- dash lights go out - and other assorted nightmares. The switch is JUST a switch inside the column right?? or is it one of those nightmare multi-task switches and it's prolly shorted out inside making the other things go nutty. ANYONE have this before, or as usual ,is it JUST ME

DAVE

Yeah, the hazard switch is a single duty switch that is wired in parallel with the signal switch. (So it overrides the signal switch.) The hazards are over ridden by the brake switch when depressed. With the hazards on, when the brake is depressed, the tail lights, side markers and front parking lights should stay lite up. Kinda like what you observed. My guess is that if your dash lights are going out (when hazards on, brakes depressed), you might have the 'hot' wire between the hazard switch and the brake switch shorted to ground.

Quote:

Originally Posted by Captkaos

I HATE electrical problems with a PASSION!!! ...

says Chris as he's going through his LS6 wiring harness... cut ends and all.

**crossy** · 04-04-2006, 10:54 AM

I dont recall ever having to go after one of these or not(hazard switch) or at least not on a 84 -up where everything is inside the column. are they accessible?? I'm sure they must be buried under the turn signal switch.?? DAVE

**Captkaos** · 04-05-2006, 01:42 PM

Quote:

Originally Posted by boxrodz

says Chris as he's going through his LS6 wiring harness... cut ends and all.

EXACTLY! It isn't so bad since it actually doesn't "work" yet. I posted a pic of it when I was working on it last night in my picture thread.

**crossy** · 04-05-2006, 05:28 PM

OH the fun continues. the 4 ways work fine now but Oil pressure , fuel and temp gauge bury now when i pull the headlights on. Thought for sure that was a bad headlight switch but i changed it out for a good one and it does the same thing?????????????JUST ONCE i'd like to buy one of these trucks that hasn't got electrical problems. DAVE

**crossy** · 04-05-2006, 05:35 PM

I posted this 4 way problem in electrical and got a response that solved THAT problem. now on to the NEXT problem.DAVE

http://67-72chevytrucks.com/vboard/s...d.php?t=195046.

**crossy** · 04-05-2006, 08:51 PM

found that problem too. the multi connector in the back of the cluster was not making good contact. even though i had checked it ten times as i was installing the cluster the bottom part was trying to pop out. all gauges work OK, but the OP gauge is going to need a sender(no surprise). it goes high then low back to hgh etc. DAVE

04-03-2006, 09:54 PM	#1
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	with 4 way flashers on, stuff goes crazy??hep me All the electrical stuff on this 86 works OK (except dash light dimmer) UNLESS I try to turn on the 4 way flashers. at that point if i hit the brake a front park light will come on- dash lights go out - and other assorted nightmares. The switch is JUST a switch inside the column right?? or is it one of those nightmare multi-task switches and it's prolly shorted out inside making the other things go nutty. ANYONE have this before, or as usual ,is it JUST ME DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

04-03-2006, 11:34 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: with 4 way flashers on, stuff goes crazy??hep me I HATE electrical problems with a PASSION!!! I honestly haven't had one do that before. I don't know if I should congratulate you or not. With how the turns are on these, I don't care to guess. I had one that the blinkers were going screwy on me and finally found that it had a bad ground in the rear harness. I am guessing a short too, but no clue where to check, but here is a wordy bump for ya! __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

04-04-2006, 10:54 AM	#4
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: with 4 way flashers on, stuff goes crazy??hep me I dont recall ever having to go after one of these or not(hazard switch) or at least not on a 84 -up where everything is inside the column. are they accessible?? I'm sure they must be buried under the turn signal switch.?? DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks. Last edited by crossy; 04-05-2006 at 05:25 PM.

04-05-2006, 05:28 PM	#6
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: with 4 way flashers on, stuff goes crazy??hep me OH the fun continues. the 4 ways work fine now but Oil pressure , fuel and temp gauge bury now when i pull the headlights on. Thought for sure that was a bad headlight switch but i changed it out for a good one and it does the same thing?????????????JUST ONCE i'd like to buy one of these trucks that hasn't got electrical problems. DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

04-05-2006, 05:35 PM	#7
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: with 4 way flashers on, stuff goes crazy??hep me I posted this 4 way problem in electrical and got a response that solved THAT problem. now on to the NEXT problem.DAVE http://67-72chevytrucks.com/vboard/s...d.php?t=195046. __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

04-05-2006, 08:51 PM	#8
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Re: with 4 way flashers on, stuff goes crazy??hep me found that problem too. the multi connector in the back of the cluster was not making good contact. even though i had checked it ten times as i was installing the cluster the bottom part was trying to pop out. all gauges work OK, but the OP gauge is going to need a sender(no surprise). it goes high then low back to hgh etc. DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.



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