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91 Suburban headlight question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Eric M., Dec 30, 2001.

  1. Eric M.

    Eric M. 1/2 ton status

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    Do your low beams go off when you switch to high beams?

    Thanks,

    Eric M.

    Blown K3500 [​IMG]
     
  2. Burbinator

    Burbinator 1/2 ton status

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    Yes, they did...

    I wired in some NO ("normally open") relays, triggered by the high beams to turn on the lows and not to interfere with low beam operation. It takes about an hour to do to make it look like stock wiring. I can make you up a schematic, if you'd like.

    The learning curve is a toll road...ride with someone who has already paid!
    <a target="_blank" href=http://community.webshots.com/user/abshort>U.S.S. Nimitz II</a>
     
  3. Eric M.

    Eric M. 1/2 ton status

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    Thanks,

    I think I'll try it out for a while the way it is. I have never seen a system like that before. I thought maybe the previous owner had done some strange wiring. Everything else I own keeps the lows on when the highs are activated.

    Eric M.

    (Gotta love the net ... where else can I get an answer to a question like that at 11PM on a Sat. night!)

    Blown K3500 [​IMG]
     
  4. woody9

    woody9 1/2 ton status

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    Yep! My 91 works exactly like that! Only 2 on at a time. There are a couple kits out there (K-C Lights &amp; Painless Wiring I believe) that will allow the lows to stay on when you hit the HIGH beams. Added the KC myself ($20.00) but think the painless also has some relays to allow the lights to get juice directly from the battery (makes 'em a tad brighter as I u nderstand it).
    It sure makes a difference with all 4 running either way!
     
  5. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    woody9... how easy is that wiring set-up? i've thought about it before. but i haven't seen any kits except for in mags.

    LOOK OUT MOAB, HERE COMES THE SUB!!!!!
    scott,
    1989 GMC suburban 3/4t 4" lift rollin on 36" swampers, tbi350, th350, np241
     
  6. Eric M.

    Eric M. 1/2 ton status

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    Thanks,

    I decided to go ahead with the change. I ordered the Painless kit ($21). They say it takes about 10 min. to install, except for 88 to 91 Suburbans, which will require some modifications. I wonder what that means!

    Eric M.

    Blown K3500 [​IMG]
     
  7. woody9

    woody9 1/2 ton status

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    It was REAL simple! Took longer to drill the holes to mount the relay &amp; find a couple screws to mount it than it did to do the wiring part!
    Havin all 4 sure help on these backwoods Wisconsin roads!
     
  8. woody9

    woody9 1/2 ton status

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    Did mine this past summer.. (which means a ton of beer's ago....), and if i recall you jumpered the wires thru that relay and it made the magic happen. Wasn't any rocket science to doing it.. and don't think it took more than 12 oz to complete!
     
  9. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    where can i buy this kit? painless or KC.

    LOOK OUT MOAB, HERE COMES THE SUB!!!!!
    scott,
    1989 GMC suburban 3/4t 4" lift rollin on 36" swampers, tbi350, th350, np241
     
  10. chvyhs

    chvyhs 1/2 ton status

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    I've seen a similar kit in the Summit Racing's catalog. It's on pg. 232 in my new catalog.The part # is PRF-30802.
    Clicky WebShot Pics
     
  11. woody9

    woody9 1/2 ton status

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    The KC one I got was on the shelf @ local 4x4 shop. (not an on-line ship)... but the Chvyhs has linked looks like the same (or better) kit from Painless.
     
  12. Eric M.

    Eric M. 1/2 ton status

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    I got mine at www.summitracing.com. If you can't find it, let me know and I'll dig up the paper work / model number.

    Eric M.

    Blown K3500 [​IMG]
     
  13. JungleBoy

    JungleBoy 1/2 ton status

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    I did the same thing on my 91 and it makes a big difference. Questions:
    Which relay are you using? It's tough to find anything but imported junk at the auto parts stores around here (Houston).

    Do you know of anyone who makes the headlamp socket for the high beams? My local Chevy dealer showed only a $52 plug-in harness which doesn't fit the Burb exactly...
    Thanks
    JB
     
  14. Eric M.

    Eric M. 1/2 ton status

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    The unit I got was by Painless. I haven't put it in yet so I couldn't tell you about durability or quality. Hopefully one of the guys who's posted above might answer your question. As for the light socket ... wrecking yard? That's where I would go if the dealer couldn't help. You might run it by the dealer one more time just to make sure they got the right part #.

    Good Luck,

    Eric

    Blown K3500 [​IMG]
     

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