Upgrading the underhood light

wraith1516

Member
May 8, 2018
68
Michigan, USA
would NEVER jinx my jeep by putting a piece of shit gm part anywhere on it but that said a good led lite and a mercury switch from a thermostat might be finding its way under the hood gota love TOXIC metals
 
Nov 6, 2018
58
Bethlehem, PA
I bought a couple of 1156 replacement LED's from Amazon and neither one worked???? I flipped them both ways and nothing. I could not figure it out, so I got to thinking. The 12volt OEM bulb worked fine but not the LEDs. I discovered that the 12volt bulb would work regardless of of how the wires from the GM light were connected to the Jeeps OEM wiring harness. Positive to positive OR positive to negative. So I simply switched the wires.....................then the LED worked.

Here are some pictures of the output of the LED light. My garage was completely dark.

This mod was well worth the time and the few dollars spent. This should be an put in every vehicle or at least every Jeep or truck.

View attachment 28983 View attachment 28984 View attachment 28985 View attachment 28986 View attachment 28987
ScottB, after seeing your post, I picked up same light. Could you tell exactly where you mounted yours on the hood support bracket, I don't want it to hit anything when hood closes. Thanks!
 

XISophos

TJ Enthusiast
Supporting Member
Mar 30, 2017
225
Denver, CO, United States
So I got the underhood lighting in from eBay along with the bulb I listed in the part above. That bulb is unfortunately too big to fit under the globe of the light itself. The one I went with instead is a 67-CW12-G. Here's a pic with both bulbs and the globe to show the difference.
76167


I then took the one that was too big, and compared it to my reverse lights, and they're pretty much a 1 to 1 swap.
76168


Hope this helps!

Edit: Sorry the pics are bad. I was about to start dinner, and the War Department was starting me down.
 
Reactions: Alex01
Nov 6, 2018
58
Bethlehem, PA
So I got the underhood lighting in from eBay along with the bulb I listed in the part above. That bulb is unfortunately too big to fit under the globe of the light itself. The one I went with instead is a 67-CW12-G. Here's a pic with both bulbs and the globe to show the difference.
View attachment 76167

I then took the one that was too big, and compared it to my reverse lights, and they're pretty much a 1 to 1 swap.
View attachment 76168

Hope this helps!

Edit: Sorry the pics are bad. I was about to start dinner, and the War Department was starting me down.
Thanks xisophos
 
Reactions: XISophos

XISophos

TJ Enthusiast
Supporting Member
Mar 30, 2017
225
Denver, CO, United States
Thanks xisophos
No worries!

The one thing I don't particularly care for is that the smaller bulb, while the diodes are protected by a glass bulb covering, doesn't have as many diodes, so I'm sure it won't put out as much light as the original 1156 that I ordered. I'll probably get another one that has a lot more diodes to keep in the goody bag in case I get into a situation where more light is needed. I like options. 😁
 

Kyle_W

TJ Addict
Supporting Member
Nov 16, 2016
1,327
Spicewood, TX, USA
No worries!

The one thing I don't particularly care for is that the smaller bulb, while the diodes are protected by a glass bulb covering, doesn't have as many diodes, so I'm sure it won't put out as much light as the original 1156 that I ordered. I'll probably get another one that has a lot more diodes to keep in the goody bag in case I get into a situation where more light is needed. I like options. 😁
Bro, I still freaking crack up at your profile picture. Every time. :D