4 Hi mod help

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lucasbrackins

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How to wire up the 4-HI mod.

They work. Shhh, after 6 days don't say it too loud. They hate me lol

---------- Post added at 09:14 PM ---------- Previous post was at 08:21 PM ----------

Thank yall sooooo much
 
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lucasbrackins

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How to wire up the 4-HI mod.

Damn here we go again. Drove to school this mornin, got to school and now i have the same problem. Wtf

---------- Post added at 08:05 AM ---------- Previous post was at 07:35 AM ----------

put a napa relay in my lows and same porblem so now what???????!!!!!!!!!

---------- Post added at 08:12 AM ---------- Previous post was at 08:05 AM ----------

the low relay was a little warm bot not hot
 
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lucasbrackins

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maybe try putting one of the 6a on the low wire to keep it from backfeeding back into the BCM?????

---------- Post added at 12:11 PM ---------- Previous post was at 10:57 AM ----------

Switched the 3amp diode that keeps power from entering the truck out for the 6 and it works fine again
 

SunlitComet

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i need to know what year you have and am also wondering why there is a diode on the "body control" line, what color is that line, what made yo put it on and do you have automatic headlights?
 
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lucasbrackins

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How to wire up the 4-HI mod.

My truck is a 2000 classic. 98 body style. And i put the diode on the green wire that feeds the low beam to keep power from backtracking back into the truck. (May not be needed, but i have a buddy that said itll mess the body control module up, but im 90% sure my trucks headlights don't run through a bcm

---------- Post added at 01:16 PM ---------- Previous post was at 01:15 PM ----------

No automatic headlights
 

SunlitComet

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yeah get rid of the that diode. so you have a 2000 tahoe limited then? the 2000 classic 98 body style description is confusing. describe it as you were ordering parts from a part store desk please instead.
 
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lucasbrackins

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How to wire up the 4-HI mod.

Actually... Its a truck... Sorry, this was the closest thread to my problem. Its a 98 per parts store. The square body style

---------- Post added at 02:36 PM ---------- Previous post was at 02:00 PM ----------

Sorry to jack yalls forum
 

SunlitComet

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1998 truck? same wiring really no biggie just getting tied up in the whole body control of headlight thing. if no auto headlight then body controller and headlight control module are not in play here.
 
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lucasbrackins

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How to wire up the 4-HI mod.

Thats what i thought, thank you for verifying that for me. So i do not need the diode keeping power from entering the truck right?

---------- Post added at 03:48 PM ---------- Previous post was at 03:47 PM ----------

The lights are controlled simply by a switch right
 
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lucasbrackins

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How to wire up the 4-HI mod.

Ok here we go So i will pull that diode when i get home
 
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lucasbrackins

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How to wire up the 4-HI mod.

All good, it still works. The real test will be if they are still working tomm afternoon
 
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lucasbrackins

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How to wire up the 4-HI mod.

Got in the truck to drive to school and same deal?? Flip back to lows and they flash and go out?

---------- Post added at 06:30 AM ---------- Previous post was at 06:21 AM ----------

Startin to get pissed now, i have no clue
 
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lucasbrackins

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How to wire up the 4-HI mod.

This is the wiring diagram out of the truck out of a Haynes repair manual
ImageUploadedByTapatalk1365766791.133796.jpg

The only thing i can figure is the drl relay
 
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lucasbrackins

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How to wire up the 4-HI mod.

Well hell im lost now when i go from lights to drl i loose them?
 

SunlitComet

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so when you have head switch off and parking brake released you have low beams?
when you turn switch on you again have low beams but marker lights as well correct? and they stay on forever with out issue?
when you go to high all beams are on and marker light as well but sometimes the lows flake out while everything as is on? do they randomly come back on or just die until you do something.
 
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lucasbrackins

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How to wire up the 4-HI mod.

High and low work fine alone

---------- Post added at 06:18 PM ---------- Previous post was at 06:15 PM ----------

With the key on I have daytime running lights, when I flip the main switch to turn on the headlights I have low beams and marker lights, but when I go to turn off the main switch I lose my daytime running lights. With four high conversion wired in, I go to highbeam and when I flip back to low beam I'll lose my low beams, and they will not come back on until I turn my daytime running lights off as well as my headlights
 

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