Headlight relay harness

[Kyleinreallife]

I’m looking to make and install a relay harness for my headlamps this weekend.

 

I have the wagoneer quad light front clip.

 

It currently has rigid pods as the low beams and the stock hi beams. I’m looking to put the stock low beams back until I get leds.

 

Is it possible to make a relay harness that will work with the stock lights and accept the leds when I get them?

 

Also, if anyone has advice on how to wire it so my low beams stay on when I turn on the hi beams, I’d appreciate it!

 

This is as it is now:

 

And these are lights I’m going going to get (2 lows/2 his—they’re single function and since I have the quad clip it works out):

 

http://www.truck-lite.com/webapp/wcs/stores/servlet/CompareProductsDisplayView?storeId=10001&catalogId=10002&langId=-1&compareReturnName=Headlights&searchTerm=&categoryId=13091&catentryId=51299;51300&returnUrl=http%3A%2F%2Fwww.truck-lite.com%2Fwebapp%2Fwcs%2Fstores%2Fservlet%2FCategoryDisplay%3FstoreId%3D10001%26urlLangId%3D-1%26beginIndex%3D0%26urlRequestType%3DBase%26categoryId%3D13091%26pageView%3Dgrid%26langId%3D-1%26catalogId%3D10002%23facet%3A-7000000000000003359766968%2C-700000000000000328652341205434%26productBeginIndex%3A0%26orderBy%3A%26pageView%3Agrid%26minPrice%3A%26maxPrice%3A%26pageSize%3A%26%26fromPage%3Dcompare

 

Not looking for input on lighting selection, just technical knowledge. Please and thank you!

 

 

87 XJ Wagoneer Ltd I-6 NP242 AW4 HPD30/D44

[johnj92131]

Question - are these 4 x 6  Truck-lites you have linked going to require modifications to the Waggy front end?

 

H4703/H4701 dimensions I find on web are 92 mm by 150 mm.   

 

4" x 6"  = 101.6 mm x 152.4

 

I ask because I also have a Waggy front end in the garage for possible use on 86 Comanche.

[gogmorgo]

I haven't completely gone through this but it looks like it'll also function the same as the relay harness upgrade to reduce load on the headlight switch. 

[Ωhm]

Photo taken from thread "How To Make All 4 Headlights Illuminate With Wagoneer Header"

 

 

Not sure relay X serves any purpose here. Relay H carries current for both the High and Low beams. Yes schematic works. 

[gogmorgo]

I agree. X literally just turns itself on which connects it's signal wire to the headlight. 

Almost makes me think there was an error in the diagram, and its only supposed to take its signal from the switched output of relay H and should just have the 12V from the battery applied as the power supply. Wiring it that way means relay H would only need to be rated for the current from the high beams, not the combined high and low beams, although that shouldn't be a problem on just the stock headlights and a typical 30A relay. Pretty sure you'd cook the factory wires to the headlight sockets before you exceed the capacity of a standard relay.

[Ωhm]

If you're going to use three (3) relays, might as well put relay x to work.

Schematic needs proofing. Mark-up at will.
Possible weak link: Headlight ground circuits. Factory never intended both Low and High beams to be on at once.
Relay Logic: This (LB) or (This (LB) and That (HB)).