5 KC's to one switch - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 08-29-2005
Rosemont's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: Longview, Wa
Posts: 52
5 KC's to one switch

How would i go about wiring 5 kc lights into one switch or is it even possible. Im getting a grizzly roll bar and light bar and your able to mount 5 lights on top just didnt want three switches.
Reply With Quote
  #2  
Old 08-29-2005
Member
 
Join Date: May 2004
Location: Fuquay Varina, NC
Posts: 3,048
use 3 relays, and make your switch the switching wire for all 3 relays, that should do it
Reply With Quote
  #3  
Old 08-29-2005
Rosemont's Avatar
Member
Thread Starter
 
Join Date: Jun 2005
Location: Longview, Wa
Posts: 52
So i could split the wire that goes from the switch to relays. It wouldn't fry the switch or anything?
Reply With Quote
  #4  
Old 08-29-2005
Michael's Avatar
Member
 
Join Date: Aug 2005
Location: Houston, Tx
Posts: 156
All the lights would be wired to 3 relays which would then be wired to the switch. The relay is like a switch in itself but it allows a lot more current to flow through it. Rather than "switching" a relay like a light switch you wire it to a switch in your truck that triggers the connection.
Reply With Quote
  #5  
Old 08-29-2005
04lvl2's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Palm Bay, FL
Posts: 5,600
Yes the relay is just a switched device that carries the load, the switch it self just pulls the relay contact closed when you hit the switch. So if you wire it up like Bob and Michael then you will be golden.
Reply With Quote
  #6  
Old 08-30-2005
Member
 
Join Date: Jun 2004
Location: Somewhere, XYZ
Posts: 4,351
Quote:
Originally Posted by Rosemont
So i could split the wire that goes from the switch to relays. It wouldn't fry the switch or anything?
Nope, shouldn't be a problem, as long as you are reasonable about it. Wire the relay coils in parallel. The 3 relays (2 lamps per relay) should be okay for an interior circuit. But you might want to check the specs on the relays and figure out how much the driving coils draw. Current draw of circuits in parallel are additive. So if 2 relay coils draw ~10mA ea and the third draws ~20mA, then the whole circuit would draw ~40 mA and you would need to use the appropriate wire guage and fuse values.

Last edited by NHBubba_Revisited; 08-30-2005 at 09:41 AM. Reason: Der! I can like add and stuff!
Reply With Quote
  #7  
Old 08-30-2005
Rand's Avatar
Member
 
Join Date: Jun 2004
Location: Barberton,Ohio
Posts: 1,189
normal automotive relays draw 1-3amps each. (generally)

Rand
Reply With Quote
  #8  
Old 08-31-2005
Member
 
Join Date: Jun 2004
Location: Somewhere, XYZ
Posts: 4,351
Given, my spit-ball figures are a little low. But I've seen specs as low as 50mA.

IIRC most relay coils are ~75 Ohm.. which should result in a coil draw of ~160mA @ 12V.

Regardless, he should be okay wiring several relays in parallel on in a ~5 amp circuilt.
Reply With Quote
  #9  
Old 08-31-2005
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Quote:
Originally Posted by Rand
normal automotive relays draw 1-3amps each. (generally)

Rand
No way. Maybe a starter relay. But the typical 12 volt accessory relays are less than 1amp, most less than 500ma.

I'm not sure what wattage the lights you're getting are. The rating of the relay will determine how many relays you need. Using the 125% rule:

100 Watt lights: 45 amps
(3) 20 amp relays
(2) 30 amp relay

150 Watt Lights: 67 amps
(4) 20 amp relays
(3) 30 amp relays

The high current feed to each relay should be fused according the the relays current rating. A 30 amps relay gets a 30 amp inline fuse feeding it. Do not just put one big 60 or 80 amp fuse and split to each relay. You can very easily cook the relays or burn the wires and your truck down if something shorts or is not working properly.

Last edited by FireRanger; 08-31-2005 at 11:02 AM.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Brake switch switch TexasRanger General Technical & Electrical 0 02-16-2009 12:13 PM
Switch is off, Lights are on, Switch is on, lights are off?!?! FMD General Technical & Electrical 9 05-08-2008 08:54 PM
'06 - '07 Headlight switch w/ built in fog light switch....... lifted97ranger General Technical & Electrical 60 03-22-2008 07:11 PM
Using stock fog lite switch for my KC switch...need wire color breakdown Fx4wannabe01 General Technical & Electrical 9 10-06-2007 11:11 PM
Using the 4x4 switch as a 3-position 'normal' switch... Swoop1156 General Technical & Electrical 16 12-19-2005 09:42 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 09:18 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.