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bnam
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Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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 Posted: Sat Sep 01, 2018 10:06 am Post subject: Flasher relay question |
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The wiring diag for a 65 KG shows a 2pin flasher with the switch and the pilot lamp connected to the same pin. See J1 in the pic.
Since the bulb is connected to ground,does this setup not cause the flasher to ground thru the pilot bulb and be flashing/clicking all the time (even if the lights themselves stay off)?
I have a 3 pin relay with +, switch, and lamp connections. And, the wiring works harness has 2 separate connectors for the blue wire to bulb and the black/white/green wire to switch. Still, I am not able to get the buld to flash with the lamps. I tried an LED first and thinking that was the problem, swapped out to a new regular bulb.
Thanks!
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1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL |
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bnam
Samba Member
Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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| Posted: Sat Sep 01, 2018 5:52 pm Post subject: Re: Flasher relay question |
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Re-reading the diag, I think the pilot indicator gets 12V from the fuse and grounds thru the flasher.
Can I use a 3 pin flasher relay for this? Or do I need to find a special 12V version of the original 2-pin 6V relay?
_________________
1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL |
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sputnick60
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Joined: July 22, 2007
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Location: In Molinya Orbit
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bnam
Samba Member
Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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| Posted: Sun Sep 02, 2018 7:13 am Post subject: Re: Flasher relay question |
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Actually, I have the US version wiring (that's what I ordered).
And, I've wired it the same way. Is there a special VW flasher relay required or will a standard 3 pin flasher relay work. The common diagrams I've seen for 3 pin relays show ground thru the pilot light. But, that's not the case on the US version wiring either.
I'm using a standard 3 pin relay. It's possible it's defective, but wondering if I need something non-standard.
_________________
1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL |
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sputnick60
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Joined: July 22, 2007
Posts: 3916
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sjbartnik
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Joined: September 01, 2011
Posts: 5998
Location: Brooklyn
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| Posted: Tue Sep 04, 2018 1:35 pm Post subject: Re: Flasher relay question |
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sputnick60 nailed it.
The early 2-pin flasher relays ground through their housing - they mount to a bracket on the body and that is the ground connection for the relay.
The pilot bulb is wired to the same terminal as the flasher output. But the pilot bulb gets power all the time via the same source as the oil pressure light & gen. light.
The ground for the pilot bulb is that terminal S on the relay. So when the flasher is "on" and outputting 12v to the turn signal bulbs, the pilot bulb has 12v on both sides and does not light.
When the flasher is "off" and the turn signal bulbs are off, the relay gives ground to the pilot bulb and it lights.
The pilot bulb therefore flashes opposite to the exterior bulbs, i.e. the pilot is lit when the exterior bulbs are dark and vice versa.
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1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
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bnam
Samba Member
Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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| Posted: Wed Sep 05, 2018 5:50 pm Post subject: Re: Flasher relay question |
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Yes, I had come to that conclusion after studying the diag some more. The flaps relay I have work -- does not have a dedicated ground and is plastic shell - so grounds thru switch/lamps. I plan to try Y-ing the pilot light to the switch.
_________________
1971 1302LS Convertible (RHD) owned since '74
Click to view image
1965 Karmann Ghia Coupe - under restoration
1966 Fiat 1500 Cabrio (with 1600 Twin cam)
1952 Citroen TA 11BL |
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