Sounds like a signal switch.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ballzac · 05-19-2005, 10:28 AM

I'm sure i am a fool for not knowing this. I have a 78 C10 and my brake lights, turn signals and 4-way flashers all went at the same time. I tried fuzes because they are the easiest and that didn't work so now i have to put forth some effort. Any help would be greatly appriciated. Thanks

Larry

us111 · 05-19-2005, 11:09 AM

sound's like a bad ground somewhere to me,,way i usually check it is run a long wire directly from - post on battery all the way to back of vehicle,,then find the ground wire for your light's as close as possible to the light's,,skin the ground wire just enough to touch the two together..or stick a sharp needle thru ground wire and touch your wire to needle..tell's you real quick if it's a ground problem or not..

60-66 Nut · 05-19-2005, 11:14 AM

Larry, it seems strange that nothing at all works. Most of the time when a signal switch goes, you loose one or two lights, but not everything. Make sure to check the right fuses, you should have one for the signals and one for the brake lights/four ways. Many times the old glass fuses(which you should have on a 78) will burn or break down in the end where you can't see it. They were also bad about corroding. Also be sure to check all the bulbs and both flashers. Not saying it can't be the switch, just be sure to check all the other stuff too. Hope that helps.

60-66 Nut

86 GMG · 05-19-2005, 02:59 PM

Another Place To Check Is The Wire Harness Under The Hood To Were It Connects To The Fuze Box That May Have Worked Loose And Not Making A Good Connection There Will Be A Bolt Taht Could Be Loose Or The 3 Or 4 Diffrent Connectors Clip In. Good Luck

Ballzac · 05-20-2005, 10:16 AM

thanks for all of your help fellas, you guys charge a lot less than a mechanic.
I'll let you know next week how things went over the weekend. ROCK ON

Larry

05-19-2005, 10:28 AM	#1
Ballzac Registered User Join Date: May 2005 Posts: 2	Sounds like a signal switch.... I'm sure i am a fool for not knowing this. I have a 78 C10 and my brake lights, turn signals and 4-way flashers all went at the same time. I tried fuzes because they are the easiest and that didn't work so now i have to put forth some effort. Any help would be greatly appriciated. Thanks Larry Last edited by Ballzac; 05-19-2005 at 10:29 AM. Reason: wanted to add a metal guy

05-19-2005, 11:09 AM	#2
us111 Registered User Join Date: Jul 2004 Location: ashland oh Posts: 660	lights sound's like a bad ground somewhere to me,,way i usually check it is run a long wire directly from - post on battery all the way to back of vehicle,,then find the ground wire for your light's as close as possible to the light's,,skin the ground wire just enough to touch the two together..or stick a sharp needle thru ground wire and touch your wire to needle..tell's you real quick if it's a ground problem or not..

05-19-2005, 11:14 AM	#3
60-66 Nut Professional Beer Tester Join Date: Aug 2004 Location: Louisiana Posts: 453	Larry, it seems strange that nothing at all works. Most of the time when a signal switch goes, you loose one or two lights, but not everything. Make sure to check the right fuses, you should have one for the signals and one for the brake lights/four ways. Many times the old glass fuses(which you should have on a 78) will burn or break down in the end where you can't see it. They were also bad about corroding. Also be sure to check all the bulbs and both flashers. Not saying it can't be the switch, just be sure to check all the other stuff too. Hope that helps. 60-66 Nut __________________ 60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500

05-19-2005, 02:59 PM	#4
86 GMG Registered User Join Date: Apr 2005 Location: Tulsa Oklahoma Posts: 943	Another Place To Check Is The Wire Harness Under The Hood To Were It Connects To The Fuze Box That May Have Worked Loose And Not Making A Good Connection There Will Be A Bolt Taht Could Be Loose Or The 3 Or 4 Diffrent Connectors Clip In. Good Luck __________________ square body trucks an addiction or an investment either way they consume all my extra time and money

05-20-2005, 10:16 AM	#5
Ballzac Registered User Join Date: May 2005 Posts: 2	thanks for all of your help fellas, you guys charge a lot less than a mechanic. I'll let you know next week how things went over the weekend. ROCK ON Larry



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