6 volt relays

I wish to thank all of you for your input, especially Wltr Mitty I ordered 3 of them just now using the link you posted. By the way 6 volts will not pull in a 12 volt relay, I tried it today. Thanks again to all of you.
Gary.
 
Old Henry said:
Here's a 12 volt one that you could run down to Radio Shack and pick up for under $5.00. It would probably work with 6 volt since it doesn't take much juice to activate the electromagnet for a relay. The secondary (switched) side of the relay doesn't care about voltage since it's just a switch. If it doesn't work, just take it back. http://www.radioshack.com/product/index.jsp?productId=3020762
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I just bought this 12 volt relay from Radio Shack and it works fine on 6 volts. Just thought someone might like to know.
 
Old Henry said:
I just bought this 12 volt relay from Radio Shack and it works fine on 6 volts. Just thought someone might like to know.
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More than likely, you got lucky and the likelyhood of continued, dependable operation would be suspect in my book. DD
 
Speedway Motors has them for fans and such for hot rods their 6 volt and good for 20/30 amps and their made by Bosch. They have a terminal for a normanly open circut and one or a normanly closed circut all on the same relay depending on how you hook it up they might work on horns too if they don't pull more than 30 amps The part number is 0332204001 bosch number and Speedway's number is 910-64104 it's for 6 volt systems not 12 volt.
 
Wltr_Mitty said:
Here's another option: The Bosch relays were a little too pricey for me so a google search turned up these identical SPDT take-offs for ~$3.50 ea. They look and mount just like the Bosch units.

Tyco Electronics 0-1432873-1. They're 6v, 40 amp low resistance relays and you can get them here:

http://www.newark.com/jsp/displayProduct.jsp?sku=21M4888&CMP=KNC-G-SKU-TECONNECTIVITY


I use two of them on the grey coupe... one for the electric fuel pump and one for a universal 6v wiper that I sometimes swap out for the vacuum unit on cross country trips (one advantage of not having a headliner installed)... Both are wired with switches off of the ignition circuit so everything shuts down with the key. I've been using them for almost three years now w/ no trouble.
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good find (Y)
 
Following Supereal's recommendation, I made a headlight relay from two 6v Echlin (NAPA) Solenoids, ST541 (one for high beam and one for low). It works great.
 
"I was told a couple weeks ago on Fordbarn that Bosch makes a good one but never found a 6 volt one."

Early 1950-60 VW uses them:
Bosch SPDT ​
6V 30 amp Relay​
0332204001​
Used as dimmer relay​
In 1950 to 1966 VW​
Also listed as:​
Merced 0035340245​
Porsche PCG61510100​
John Deere AR91168​
 

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Old Henry said:
I just bought this 12 volt relay from Radio Shack and it works fine on 6 volts. Just thought someone might like to know.
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May or may not work as the latching voltage is right around 6V. A similar 6V relay is:

Durakool DG85B-8011-96-1006-M1​
TE Connectivity / Potter & Brumfield 1432873-1​
 

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4dFord/SC said:
Following Supereal's recommendation, I made a headlight relay from two 6v Echlin (NAPA) Solenoids, ST541 (one for high beam and one for low). It works great.
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That's the approach I like, except I use a continues duty relay.
 

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31chevy, Newark.com has 6 volt relays,I have use several of them on '40 fords for headlights and taillights. They are very good relays.
 
4dFord/SC said:
I asked Supereal about using the ST541 as a continuous duty relay. Said he's used them for years with no problems.
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Yep, told me the same thing as have several other people. I still prefer the continuous duty relays. However, you can most likely find the interment duty ones cheaper if cost is an issue.
 
Jerry
Wonder if this would work.
Bosch 0332204001 6 Volt relay
Pin 87A low beam N/C
Pin 87 High beam N/O
Pin 30 Headlight switch
Pin 85 Bat positive
Pin 86 Dimmer switch either side, other side open.
Bruce
 
Two relays are normally used. You do need to watch the polarity on some of these relays because of an internal relay. An issue would be that the power is still coming through the headlight switch and the objective of using relays is to provide a direct path from the battery to the lights bypassing the normal car wiring. The power would be coming through pin 30 (30 is power in and 87/87a are power out). One of the pair 85 & 86 would need to complete a circuit to switch the power. This is normally a power (trigger) source and a ground. If the headlight switch was to be used as the trigger source it would have to be on 85 or 86 and the power on 30. Battery power on 85/86 and the dimmer switch on 85/86 would be providing power to both sides at the same time.
 

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cmbrucew said:
Jerry
Wonder if this would work.
Bosch 0332204001 6 Volt relay
Pin 87A low beam N/C
Pin 87 High beam N/O
Pin 30 Headlight switch
Pin 85 Bat positive
Pin 86 Dimmer switch either side, other side open.
Bruce
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Just for the heck of it I looked at this. I would not even consider it, but physically think it could be done. (this has not been well thought out, so not really sure it would work without some additional effort).
 

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"Battery power on 85/86 and the dimmer switch on 85/86 would be providing power to both sides at the same time."

Low beam circuit 87A is open when the dimmer switch is toggled to High completing the circuit 87
Bruce
 
cmbrucew said:
"Battery power on 85/86 and the dimmer switch on 85/86 would be providing power to both sides at the same time."

Low beam circuit 87A is open when the dimmer switch is toggled to High completing the circuit 87
Bruce
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Your statement is correct, but the dimmer switch would have to complete a circuit to ground to energize the coil. If I understand what your saying, with battery power on the other side of that pair, that is not how the relay works. 85-86 circuit is what energizes the coil. The coil basically turns a switch between 87 and 87a, de-energized it connects 30 to 87a, energized it connects 30 to 87. Putting battery power on say 85 would just connect it to battery power from the dimmer switch and nothing would happen. 85-86 has to be a trigger source to energize the coil.
 
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