If it's not covered under warranty...are they going to cover it after they replace it?

I will get the GM labor rate tomorrow and let you know unless someone mentions it first here.

Mark

Is there a right and wrong direction to install the diode. I picked up a diode from Radio Shack yesterday and I want to try the install using the diode this time. The diode has a thin band on one end of the barrel is that the front or the backside of the diode. Can the thin wire coming off of each direction of the diode be cut to shorten the length of the diode without effecting the diode? By the time I add the jumper wire it will be much to long if it can not be cut.

I cut mine with no problem. I don't remember in which direction the band is supposed to go..but I know that you want the current to run from the headlamp low to the drl...or whatever your setup is...and not the other way. Search back in this same thread and there should be a post that tells you which way is which...

I installed mine with the striped end of the diode towards the headlamp (I wanted my drl's on with the headlamps) Not towards the DRL relay.

I installed it backwards at first and nothing happened. I switched it and it worked fine.

HTH's,

Mark

Dochummer, did you place the diode on the red lead or the yellow that you added?

FINALLY installed the jumper today with diode!

One question though, maybe someone can help, I want the the DRL's to stay on when the headlights/parking lights go on auto at night, but I DON'T want the headlights/parking lights on during the day. So I jumped #85 on the DRL and #85 on the HDLP-LOW, but I got all of the lights on during the day?

Please tell me what I'm doing wrong!

I am interested in hearing the answer to HummBob's question also!!!

Prob reversed diode. Before you turn it around and plug it back, do QUADRUPLE check that you're jumping only trigger to trigger between the 2 relays.

Yeah, you probably reversed it. Maybe you should post a pic of your setup just to make sure you've got it right.

Kinda hard to see but I have it jumped from DRL #85 to HDLP LOW #85. I tried switching it around, and nothing happened. Maybe the diode is bad?

DocHummer does HummBob's post above look right for the DRL's to stay on with the Headlights and have everything else operate the same as factory. I see that HummBob is from Canada I have heard that there are some differences in electrical setup for Canadian VS USA manufactured H2 units.I am being cautious since I have already had a bad experience that I do not want to repeat.

Can someone summarize the above posts and let me know if I need to run one jumper from the DRL's to the PARKING LIGHTS and another one from the DRL's to the HEADLIGHTS LOW BEAM if all I am trying to achieve is to be able to run the DRL's with the LOW BEAMS at night or do I run just one from the DRL's to the LOW BEAM???

DeBest,

The way I have it works properly. I'm just an IDIOT. I did the jumper in my garage DURING the day, so I assumed it was light enough out. But my auto lights came on in the garage.
Took it outside, it works properly

HummBob can you tell me what the results are of your jumper the way you have it in the above post. Do you still have the DRL's on during the day? What lights are on when you turn your headlight selector from auto to the parking lights?

Is it safe to put a diode from high beam to low beam relay? Just curious when high beam is in use, can the low be on also?

i did it on my chevy avalanche and it worked great.. i havent tried it on the hummer yet.. but i would think it would work the same!

NO! Never illuminate both filaments in single bulb headlamps. It overheats the bulb and housing. I have been told it can cause bulb to burst although I have never seen it happen. If the headlamps had seperate high/low bulbs as in dual headlights on old Chev P/U you can do it on them.

BTW... DRL Relay to Low Headlamp Relay jumper w/diode works great. My truck has been that way 3+ years.

Ok, thanks. I was curious if anyone have tried the hi/lo mod.


NO! Never illuminate both filaments in single bulb headlamps. It overheats the bulb and housing. I have been told it can cause bulb to burst although I have never seen it happen. If the headlamps had seperate high/low bulbs as in dual headlights on old Chev P/U you can do it on them.

BTW... DRL Relay to Low Headlamp Relay jumper w/diode works great. My truck has been that way 3+ years. </div></BLOCKQUOTE>

hi i just did this ...and it works great...i used the diode ..so the parking lights arent on during the day... looks nice! thanks!

Zeros can you tell me exactly where you ran the diode between which to posts? Thanks

hi i just did exactly as they showed in the earlier post..but i put a diode in line (in the wire) line side faceing the parking relay .. ill take a picture and send it to you..works nice!

Zeros if you would send a picture I would appreciate it, I have tried several different combinations and the drl's are staying on during the day!

Thanks............

Zeros would you mind sending me the pic?

I have it jumped from DRL #85 to HDLP LOW #85.

It works perfectly, DRL's ONLY during the day, then all at night

HummBob, This is exactly how I have it now and the drl's are on during the day, Zeros said the way he has it the drl's are off during the day which is what I prefer and than all on at night!!! Thanks.......

do I need to disconnect my battery before do the jump between relays?

I didn't

I don't know if there is way to turn off the DRL's during the day. Safety feature.

here is what i did.. face the side of the diode with the line no it toward the parking light relay..

here is a pic

Re: DRLs on with Parking Lights. It works. (Pics)
 

I think you just turn the headlights switch to the round circle position (left) and then it will bounce back and the DRL's should be off until you restart the vehicle.

Re: DRLs on with Parking Lights. It works. (Pics)
 

Thank you all for these great DRL mods.

As mentioned below by NSXTC regarding removal of fuses for the DRL and Parking Lights mod, if I will be doing the DRL mod with the low beam headlamps, then I should instead remove those fuses marked "LO HDLP-RT" and "LO HDLP LT" with the DRL fuse? Thanks, just want to make sure.

Re: DRLs on with Parking Lights. It works. (Pics)
 

Never mind! DRL to low beam lamp mod completed - another very satisfied H2 member! :)

Re: DRLs on with Parking Lights. It works. (Pics)
 

to.. much...technical...stuff...overload....!!!

why hasn't this thread been stickied. Its a commonly asked question and thge newbies, like myself, will have it for reference and not make a new thead.

just some thought!! :)

anyways, gonnat try this out tonight, will get back with some pics...

Re: DRLs on with Parking Lights. It works. (Pics)
 

well, that was easy. For the exception that its been raining all day today, i got it done.

Im kinda impatient and couldn't wait to get the mod done so i got my unbrella, parked it over the fuse box and blamo!!... No water hazard!! Well, still kinda dumb... Acutally, dont do what i do, last thing i need is someone do the same and get a short, thus blaming it on me or something.

ANYWAYS, truck looks great. Will have some pics up (keep saying that!!) I also got a set of 8K HID's as well and run the sylvania's Amber in the DRL's. Looks great! Those sylvania's shine really cool and are bright for a turn signal bulb.

so, here ya go for the dumbies like me, cliff notes!

Step 1: get some 20g wire, a 200v 1amp diode (Radio shack PN: 276-1102)

Step 2: Install the diode inbetween a line of wire. Or better put, get two pieces or wire and wire on to each side of the diode. You can solder it or wrap the wire around the diode wire and tape it up with electrical tape (NOT RECOMMEND, you should solder it)

Step 3: Remove the Prk fuse 10amp and the drl fuse 10amp.

Step 4: lift the park relay and drl relay and place the wire/diode ends (exposed wire... DUH!! :) ) into the specific slots in the relay. 86/85 respectivily. Make sure the little grey strip, the cathode side, is point towards the PRK RELAY 86. Also make sure the diodes wires arent exposed and not grounding on anything.

Step 5: Replace the relays in their specific slots. Make sure to line them up correctly; they got numbers next to the contact points on the bottom so its really easy no to mess this up.

Step 6: Replace the fuses.

Blamo!! your done! I did it with my light switch moved up to the main headlight setting not auto. So with your headlights on, you would be able to see the DRL's turn on when the connection is properly made. If not, take your time and re check everything. Check your wire/diode connections, etc.

Step 7: Enjoy!!

Re: DRLs on with Parking Lights. It works. (Pics)
 

I jumped with just wire becaused I wanted the running lights and drl to be on all the time day or night. The drl keeps runnings lights on in day and running lights keep drl on at night. No diode just wire.

I wanted running lights on all the time to make sure even though the rig is as big as a house they were seeing it with all lights possible to help aviod stupid drivers from missing seeing a house rolling down the road. Then at night the drl's just help see better under the low beams sort of like a fog light.

This should have been found in a search but, obzidian steps should be booked marked if you need to go back again.

TAZ

Re: DRLs on with Parking Lights. It works. (Pics)
 

I just popped in the diode with the following configuration: DRL #85 to HDLP LOW #85 with the grey strip on the HDLP LOW side and both the DRL and low beams come on at night but the DRLs are off during the day. I'm not sure if I'm happy with this or if I want to keep them off but any thoughts why this happened?

Re: DRLs on with Parking Lights. It works. (Pics)
 

Has anyone done this on the 07 system ? If so is it different . Thanks

Re: DRLs on with Parking Lights. It works. (Pics)
 

Hey all,

I finally did the DRL tip....works great.....thanks