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| | | Forums66 Topics128,108 Posts1,056,231 Members48,436 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | Ok,blinker dudes, I need help.I have a 3 wire arrow brand column mounted switch,1157 bulbs and a Haywire harness.I used 4 relays and the brake lights work great and so do the turn signals BUT.... when you turn on the blinker left or right the relay doesn't close as it should go from 30/87a to 30/87.I am using 1 flasher for both because of the switch Any Ideas?
Sully
| | | | | Joined: Mar 2005 Posts: 98 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 98 | are you using a regular or electronic flasher?
50 chevy 3100
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | A 3 wire switch isn't designed to use the stop light bulbs. I'd like to see the circuit you used to accomplish this. | | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | Cletis, Go to my photobucket now. I uploaded a picture. My flashers are just the basic 2 prong. See what you think.
Sully
| | | | | Joined: Mar 2005 Posts: 98 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 98 | regular 2 prong flashers need the load of the bulb to work. try an electronic flasher
50 chevy 3100
| | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | CV, Thank you,I'll try that.Forgot about the load issue. I bought the 3 wire because it was the old style and not made of plastic and looks more period perfect with my old column.
Sully
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | That's an interesting circuit. I don't see why it wouldn't work even with the mechanical flasher.
Explain ".... when you turn on the blinker left or right the relay doesn't close as it should go from 30/87a to 30/87." Are you saying when you go to right signal, neither R-R1 nor R-R2 switch?
I can't see how "the brake lights work great and so do the turn signals" if the relays aren't switching. | | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | OK,i'll try to make some sense out of this.The brake lites work fine according to the diagram because their power goes thru 87a/30 because they have continuity without the relay having a load applied.Like wise with the turn signals because they get their power from the turn signal switch and the flasher. But,when both power sources hit the relay the relay won't diconnect and go 87/30 as it should.I'll pick up a electronic flasher and try it.The only thing I can think of is the load issue as CV stated above.
Sully
| | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | I still can't grasp the problem. You say "when both power sources hit the relay". You should only have one power source at a time, either left or right. Either one should switch the relays for that side. The flasher has nothing to do with switching.
Are you sure you don't have some wires crossed. I can find no reason why the system shouldn't work if wired per the diagram. | | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | Cletis, Believe me I have cooked my brain on this one. I have wired many cars but this is a first.My theory,the relay does only have one power source until the brake switch is energized thus power is at both 87 from the turn signal and 87a the brake trying to both send to the 30 (common).I think the blinker isn't strong enough,so maybe the electronic one will fix it???? Will work on it this weekend somemore.
Sully
| | | | | Joined: Feb 2009 Posts: 95 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2009 Posts: 95 | Putting in a electronic flasher didn't fix it.Still trying...
Sully
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