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ghiafreek
Samba Member
Joined: December 19, 2002
Posts: 937
Location: San Antonio, Tx
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 Posted: Tue Dec 17, 2019 7:00 am Post subject: 6v fuel pump relay |
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Been looking for a 6v electric fuel pump relay and searches here only come up with 12v relay.
Will 12v work?
https://www.busdepot.com/321906059C |
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[email protected]
Samba Member
Joined: May 17, 2003
Posts: 4863
Location: Harmony, PA
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bluebus86
Banned
Joined: September 02, 2010
Posts: 11075
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| Posted: Tue Dec 17, 2019 10:01 am Post subject: Re: 6v fuel pump relay |
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Be sure to instal a safety auto shut off relay or switch. one that stops the pump if engine stops or impact is sensed. This is a very important safety concern in event of a wreck where you are unable to manually shut off the pump. Dont burn alive like a flaming marshmellow!
Bug On! Fire Safe!
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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ghiafreek
Samba Member
Joined: December 19, 2002
Posts: 937
Location: San Antonio, Tx
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| Posted: Tue Dec 17, 2019 12:02 pm Post subject: Re: 6v fuel pump relay |
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| Perfect! Thanks for replies. |
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Sharp64
Samba Member
Joined: August 27, 2015
Posts: 5304
Location: Central Florida
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| Posted: Tue Dec 17, 2019 12:13 pm Post subject: Re: 6v fuel pump relay |
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Just out of curiosity why are you using a relay? I’ve wired all of mine up directly using an ignition switched terminal from the fusebox. They don’t draw that much.
_________________
1960 Indigo Blue Ragtop (Blue Barry)
1967 Ghia
1985 Westy Money Pit
“...some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn.” - Michael Caine |
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bluebus86
Banned
Joined: September 02, 2010
Posts: 11075
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| Posted: Tue Dec 17, 2019 5:18 pm Post subject: Re: 6v fuel pump relay |
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| Sharp64 wrote: |
| Just out of curiosity why are you using a relay? I’ve wired all of mine up directly using an ignition switched terminal from the fusebox. They don’t draw that much. |
extra loads on the ignition circuit reduce the voltage to the coil, which adversely effects spark strength. a relay is a good way to prevent this problem.
Bug On!
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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Sharp64
Samba Member
Joined: August 27, 2015
Posts: 5304
Location: Central Florida
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| Posted: Tue Dec 17, 2019 5:47 pm Post subject: Re: 6v fuel pump relay |
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| bluebus86 wrote: |
| Sharp64 wrote: |
| Just out of curiosity why are you using a relay? I’ve wired all of mine up directly using an ignition switched terminal from the fusebox. They don’t draw that much. |
extra loads on the ignition circuit reduce the voltage to the coil, which adversely effects spark strength. a relay is a good way to prevent this problem.
Bug On! |
PO on my 60 ran it direct for years without issues. Just excess wiring to have issues with.
_________________
1960 Indigo Blue Ragtop (Blue Barry)
1967 Ghia
1985 Westy Money Pit
“...some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn.” - Michael Caine |
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5481
Location: Seattle
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| Posted: Tue Dec 17, 2019 9:37 pm Post subject: Re: 6v fuel pump relay |
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The biggest issue of running the fuel pump directly off the ignition is what happens in an accident. If you don't (or can't) turn the key off the pump may spray fuel. A proper fuel pump relay has some control mechanism to shut off the pump if the engine isn't running (oil pressure based or ignition pulse based system usually.) This company makes a 6 volt and 12 volt version.
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| Wildthings wrote: |
| As a general rule, cheap parts are the most expensive parts you can buy. |
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bluebus86
Banned
Joined: September 02, 2010
Posts: 11075
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| Posted: Wed Dec 18, 2019 1:01 am Post subject: Re: 6v fuel pump relay |
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| Sharp64 wrote: |
| bluebus86 wrote: |
| Sharp64 wrote: |
| Just out of curiosity why are you using a relay? I’ve wired all of mine up directly using an ignition switched terminal from the fusebox. They don’t draw that much. |
extra loads on the ignition circuit reduce the voltage to the coil, which adversely effects spark strength. a relay is a good way to prevent this problem.
Bug On! |
PO on my 60 ran it direct for years without issues. Just excess wiring to have issues with. |
issues...
No safety auto shut off
Less voltage for the coil, thus weaker spark
More load on the ignition switch
The wires to do it right are not excess. Them wires may even save a life.
Bug On!
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Wed Dec 18, 2019 2:26 am Post subject: Re: 6v fuel pump relay |
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The object linked by EvFun is perfect for the 6V.
It draws power for pump directly from its +30 terminal, screwed to the battery or the solenoid.
The +15 from ignition switch takes only 100mA as a start signal. |
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Sharp64
Samba Member
Joined: August 27, 2015
Posts: 5304
Location: Central Florida
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| Posted: Wed Dec 18, 2019 10:46 am Post subject: Re: 6v fuel pump relay |
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| bluebus86 wrote: |
| Sharp64 wrote: |
| bluebus86 wrote: |
| Sharp64 wrote: |
| Just out of curiosity why are you using a relay? I’ve wired all of mine up directly using an ignition switched terminal from the fusebox. They don’t draw that much. |
extra loads on the ignition circuit reduce the voltage to the coil, which adversely effects spark strength. a relay is a good way to prevent this problem.
Bug On! |
PO on my 60 ran it direct for years without issues. Just excess wiring to have issues with. |
issues...
No safety auto shut off
Less voltage for the coil, thus weaker spark
More load on the ignition switch
The wires to do it right are not excess. Them wires may even save a life.
Bug On! |
Should I have highlighted “no issues”? Car ran like a dream and he had it this way for years prior to me converting to 12v.
Auto shutoff is another subject Danger Ranger. I don’t have safety wires either.... 
_________________
1960 Indigo Blue Ragtop (Blue Barry)
1967 Ghia
1985 Westy Money Pit
“...some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn.” - Michael Caine |
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EverettB 
Administrator
Joined: April 11, 2000
Posts: 69829
Location: Phoenix Metro
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