Nevermind and carry on!
Rough Country LED Install: HELP Needed
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
I'm not rock, but you should be able to do it with two relays, because the relays would isolate the power from each other and prevent back feed to the high beams. That said, I would ask myself if I would actually use that feature much...
Edit- actually I would use 3 relays... So you aren't adding any draw to the high beam circuit.
Edit- actually I would use 3 relays... So you aren't adding any draw to the high beam circuit.
Mountain Pass
Joined: Oct 2015
Posts: 136
Likes: 3
From: Bucks County, PA
I'm looking at this light kit for a new 2017 Super Duty I'll be taking delivery on later this year. I'm considering wiring two upfitter switches in parallel to both relays. One of the upfitter switches would have a contact off the high beam relay tied in series upstream of where it connects to the relay coils. I figure I can leave that switch on and the light bars will swap on and off with the high beams, or I can flip the other upfitter switch on and it will keep them on constantly. What do you think Rock?
but are you sure you want to do that? Around here these kind of lights are illegal to use on the highway. I still do because we live next to nowhere but having them come on every time you switch to high beams may get sketchy and would really limit your use of high beams on roads like divided highways.
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
I'm not Rock either but are you sure you want to do that? Around here these kind of lights are illegal to use on the highway. I still do because we live next to nowhere but having them come on every time you switch to high beams may get sketchy and would really limit your use of high beams on roads like divided highways.
but are you sure you want to do that? Around here these kind of lights are illegal to use on the highway. I still do because we live next to nowhere but having them come on every time you switch to high beams may get sketchy and would really limit your use of high beams on roads like divided highways.
New User
Joined: Jun 2016
Posts: 15
Likes: 0
(first switch)
one from the first switch to the relay, connected to battery, direct to light bars.
Second switch:
one relay directly connected to switch... other relay from the high beam(as the switch) that connects to battery, and that battery output would go to the other relay, to power the lights.. if you skip out on the second relay, you either have to have enough juice on the switch, or enough juice on the high beam circuit to handle the light bars.
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
You would still need the three relays..
(first switch)
one from the first switch to the relay, connected to battery, direct to light bars.
Second switch:
one relay directly connected to switch... other relay from the high beam(as the switch) that connects to battery, and that battery output would go to the other relay, to power the lights.. if you skip out on the second relay, you either have to have enough juice on the switch, or enough juice on the high beam circuit to handle the light bars.
(first switch)
one from the first switch to the relay, connected to battery, direct to light bars.
Second switch:
one relay directly connected to switch... other relay from the high beam(as the switch) that connects to battery, and that battery output would go to the other relay, to power the lights.. if you skip out on the second relay, you either have to have enough juice on the switch, or enough juice on the high beam circuit to handle the light bars.
New User
Joined: Jun 2016
Posts: 15
Likes: 0
If there is enough juice, then go for it.... I am new to these trucks, so I don't know about all of the extra connections.... yet... but I do understand electrical.
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
The plan the whole time was to use three relays, I'm just hoping to tap into one already installed on the truck.
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Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
The contact on the high beam relay will only feed 12 volts across it if the sw2 is closed.
Posting Guru
Joined: Sep 2009
Posts: 2,015
Likes: 4
From: Lakehills, TX
And no, in Texas it's not illegal to use DOT approved auxiliary lighting (fogs, driving, etc) on the road, with the limitation being no more than 4 forward facing lights on at any given time, I think. So I have the factory fogs on with the low beams and then the PIAAs (or LED bar or whatever else I went with) on with the brights. Easy and clean. Why make life more complicated than it needs to be?
Cross-Country
Joined: Feb 2016
Posts: 66
Likes: 0
Connect any aftermarket lights into the vehicle lights, canbus can cause weird problems, even something as simple as replacing a canbus bulb with a non canbus bulb can cause your light to have problems.
Not saying it wouldn't work, just saying I wouldn't do it.
Not saying it wouldn't work, just saying I wouldn't do it.
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gcfisher75
1973 - 1979 F-100 & Larger F-Series Trucks
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Oct 17, 2003 01:42 AM