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Old 02-16-2020   #1
Shrek
 
Join Date: Sep 2010
Location: Currituck, NC
Posts: 246
Default LED vs Stock

Installed LEDs in our friends 93.
Wife's 91 stock vs his 93 with LEDs
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Old 02-16-2020   #2
Paul Workman
 
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Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,466
Default Re: LED vs Stock

Did you ground the fog lite relay or use the LOAD RESISTOR method or...?
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Old 02-16-2020   #3
Shrek
 
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Location: Currituck, NC
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Default Re: LED vs Stock

Quote:
Originally Posted by Paul Workman View Post
Did you ground the fog lite relay or use the LOAD RESISTOR method or...?
I grounded it by bending over lug 86 of the fog light relay and soldering on a ground wire.
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Old 02-17-2020   #4
Paul Workman
 
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Default Re: LED vs Stock

Quote:
Originally Posted by Shrek View Post
I grounded it by bending over lug 86 of the fog light relay and soldering on a ground wire.
Yup. That explains why the fogs are ON with the high beams. I guess that must be illegal in some areas - to have the fogs AND the high beams on @ the same time. Well, anyway...that's how they operated from the factory (no fogs w/ the high beams on). Personally, I don't see how it matters. Even on LO beam, if I turn the fogs off, I can barely tell a difference. But, I opted for the LOAD resistor's "plug and play" option: could have saved a few bucks by grounding the relay tho.

Anyway... LED headlights make a night and day difference!
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Old 02-17-2020   #5
-=Jeff=-
 
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Location: Bartlett, IL
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Default Re: LED vs Stock

I have LED headlights and LED Fog Lights. i added one relay and they all work like stock.

Relay was added prior to the LED conversion and still worked like stock
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1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Shelby Series 1 - Wilwood Brakes
Custom Interior
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Old 03-02-2020   #6
Shrek
 
Join Date: Sep 2010
Location: Currituck, NC
Posts: 246
Default Re: LED vs Stock

Quote:
Originally Posted by Paul Workman View Post
Did you ground the fog lite relay or use the LOAD RESISTOR method or...?
Quote:
Originally Posted by Shrek View Post
I grounded it by bending over lug 86 of the fog light relay and soldering on a ground wire.
This weekend I changed my mind and removed the ground method.
I reinstalled a new relay and went with the 168 bulb method instead.
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Old 03-02-2020   #7
-=Jeff=-
 
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Default Re: LED vs Stock

IMHO this is a better way

One added relay:
Cut Lt Grn ON OEM Fog Light Relay
Power side of Lt Grn to Pin 86 of New Relay
Pin 85 and Pin 30 of New Relay to Ground (New Wire)
fog light side of LT Grn to 87a of New Relay.

I found the Same style OEM relay on a harness and cut a length of wire with the relay socket.. I removed the terminal from the OEM relay and moved it to the new relay. Put this new relay right next to the OEM one in the dash.. works great
__________________
1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Shelby Series 1 - Wilwood Brakes
Custom Interior
NCM Lifetime Member #978
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Old 03-02-2020   #8
Shrek
 
Join Date: Sep 2010
Location: Currituck, NC
Posts: 246
Default Re: LED vs Stock

Quote:
Originally Posted by -=Jeff=- View Post
IMHO this is a better way

One added relay:
Cut Lt Grn ON OEM Fog Light Relay
Power side of Lt Grn to Pin 86 of New Relay
Pin 85 and Pin 30 of New Relay to Ground (New Wire)
fog light side of LT Grn to 87a of New Relay.

I found the Same style OEM relay on a harness and cut a length of wire with the relay socket.. I removed the terminal from the OEM relay and moved it to the new relay. Put this new relay right next to the OEM one in the dash.. works great
That's how I plan to do my wife's Z.

I decided to do this one as simple as possible for a friend of ours that doesn't do very much on his own cars. (headlight removal vs. under dash hush panel)
I even bagged a new 168 bulb with instructions and placed it in the console.
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Old 03-02-2020   #9
davidijaxson
 
Join Date: Jan 2020
Location: Dallas, TX
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Default Re: LED vs Stock

What LEDs are recommended for a 90?
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Old 03-02-2020   #10
-=Jeff=-
 
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Location: Bartlett, IL
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Default Re: LED vs Stock

Quote:
Originally Posted by davidijaxson View Post
What LEDs are recommended for a 90?
which bulb are you replacing?
__________________
1990 Corvette ZR-1 #1051
Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback
Late Model IH - Plenum
Coilovers - 4.10s
Shelby Series 1 - Wilwood Brakes
Custom Interior
NCM Lifetime Member #978
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