Thread: Can you hook up relays to stock bulbs?

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  1. #1 Can you hook up relays to stock bulbs? 
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    I want to hook up a relay to my lows highs and fogs that way I always have bright lights. I have a big system and despite having a huge red top battery and a 50 farad stinger cap my lights still dim a little. If you can hook up relays to stock bulbs please tell me how. Thank you very much. Oh yeah another reason I want relays is so my drl will be off, thanks again.
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  2. #2 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by szalajka05 View Post
    I want to hook up a relay to my lows highs and fogs that way I always have bright lights. I have a big system and despite having a huge red top battery and a 50 farad stinger cap my lights still dim a little. If you can hook up relays to stock bulbs please tell me how. Thank you very much. Oh yeah another reason I want relays is so my drl will be off, thanks again.
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  3. #3 Re: Can you hook up relays to stock bulbs? 
    Because Wet Leaves Hippo Machine's Avatar
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    It wouldn't do anything. Get HID's and a relay, much brighter.


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  4. #4 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by Hippo Machine View Post
    It wouldn't do anything. Get HID's and a relay, much brighter.
    Andddd, they pull more power from the battery so he is back to square one.
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  5. #5 Re: Can you hook up relays to stock bulbs? 
    Because Wet Leaves Hippo Machine's Avatar
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    Then get a better alt, don't get a hid relay harness for stock lights.


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  6. #6 Re: Can you hook up relays to stock bulbs? 
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    The cap really isn't going to help a great deal. Honestly, in the case of a "big system", an H.O. alternator may be your best bet. No need to go very expensive, depending on how "big" your system is... check out powerbastards for some decent alts. There's also a conversion kit that allows CS144 large-case GM alts bolt up to 3.8L engines. I'm not sure about hood clearance as I've never used it personally, but I thought I'd mention it. An upgraded alternator is definitely your best bet.
    1978 F250 2wd (460 c.i.d. / C6)- soon to give up the powerplant to an '80-'86 F150
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  7. #7 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by bluegtp91 View Post
    Andddd, they pull more power from the battery so he is back to square one.
    Yeah, but they don't dim. It won't fix his voltage drop (which is why his lights are dimming), but it will take care of the issue which he seems to have a problem with.
    1978 F250 2wd (460 c.i.d. / C6)- soon to give up the powerplant to an '80-'86 F150
    White 2000 Grand Prix GT coupe
    One still slow and loud... other one scoots just a bit.

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  8. #8 Re: Can you hook up relays to stock bulbs? 
    GTX Level Member tod1d's Avatar
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    Quote Originally Posted by Fatboy501 View Post
    The cap really isn't going to help a great deal. Honestly, in the case of a "big system", an H.O. alternator may be your best bet. No need to go very expensive, depending on how "big" your system is... check out powerbastards for some decent alts. There's also a conversion kit that allows CS144 large-case GM alts bolt up to 3.8L engines. I'm not sure about hood clearance as I've never used it personally, but I thought I'd mention it. An upgraded alternator is definitely your best bet.
    conversion kit????
    I have a cs144 alternator for sale,

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  9. #9 Re: Can you hook up relays to stock bulbs? 
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    The main reason I want to hook up a relay to my stock low beams is to disable my drl. so can you hook up a relay like the ones people hook up for hids to regular bulbs?
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  10. #10 Re: Can you hook up relays to stock bulbs? 
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    I'd ditch the cap. It doesn't help your dimming issues and puts a larger strain on your charging system.


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  11. #11 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by stealthee View Post
    I'd ditch the cap. It doesn't help your dimming issues and puts a larger strain on your charging system.
    Hell no lol its for my system! I tried my system without it and kmy lights almost went off... Now there barely dim but they do dim a little thats why I want to know if you can hook a relay up.
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  12. #12 Re: Can you hook up relays to stock bulbs? 
    GTX Level Member tod1d's Avatar
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    the rest of your cars electrical system is suffering too so get more power to it somehow

    2007 Pontiac Grand Prix
    http://www.cardomain.com/ride/2990036
    L26, CAI, HV3, ER Rockers, PLOG, Overkill Tune, flipped dog bones
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  13. #13 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by tod1d View Post
    the rest of your cars electrical system is suffering too so get more power to it somehow
    In need of a high output alternator
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  14. #14 Re: Can you hook up relays to stock bulbs? 
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    fatboy501 mentioned that the alternator I can sell you will work with some minor conversion work

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  15. #15 Re: Can you hook up relays to stock bulbs? 
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    Chevy 3100, 3400, 3500, 3800 and 3900 Alternator Upgrade This product will allow you to mount a CS144 alternator. However, I have no clue about hood clearance after this has been done... whether you try it or not is up to you. In my opinion, if you're on a budget, High Output Alternators and Accessories | PowerBastards.com has about the best deal for solid (from what I've read) alternators with decent customer service.
    1978 F250 2wd (460 c.i.d. / C6)- soon to give up the powerplant to an '80-'86 F150
    White 2000 Grand Prix GT coupe
    One still slow and loud... other one scoots just a bit.

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  16. #16 Re: Can you hook up relays to stock bulbs? 
    GXP Level Member coolone's Avatar
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    If you're running components that require a 50f Capacitor then I would say you're probably taxing your electrical system just a bit and the HO Alt. is not going to hurt. You've obviously spent some cash on the stuff, it just might require a little more.

    Have you load calculated your current/power draw from all you have installed, including the lights? Although I think the lights are the least of your worries unless your dimming only happens when you have the lights on. Without really knowing what kind of power you need at full load we're all only guessing here.

    Lol... Have you considered a LARGER Cap? hahahaha, that boggles my mind to need something so big but they DO make them. The HO Alt. with 2nd battery set-up, larger cap might be what's needed here, isolating power to the added components on their own power grid!

    Just my $.02

    I forgot to answer your question...

    Yes, relays can be added if that's what you want to do.

    The relay's act as switches, controlling the power going out to the device you want to turn on/off. The power line that is controlled by the relay can be from either the stock wiring or what is better is taking the power direct from the battery or fuse block. There are some set up's I've read and it is all a bit involved to do it right but not difficult as long as you do your homework first, lol.

    Check this out... might help some...
    http://www.backinblackgp.com/
    Last edited by coolone; 12-07-2011 at 08:51 PM.
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  17. #17 Re: Can you hook up relays to stock bulbs? 
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    Run another battery, bigger wires, better alternator and lose the cap.
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  18. #18 Re: Can you hook up relays to stock bulbs? 
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    Quote Originally Posted by develand View Post
    Run another battery, bigger wires, better alternator and lose the cap.
    Zero gauge wires installed
    Red top optima battery installed

    HO alt on the way
    Second red top on the way

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  19. #19 Re: Can you hook up relays to stock bulbs? 
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    Go with yellow top, or even better a blue top.


    2011 Mitsubishi Lancer GTS - DD mode
    1991 Mitsubishi 3000GT - Many mods to come
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