What Size Hole Saw to use on LED Tail lights - JeepForum.com
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post #1 of 19 Old 04-01-2013, 06:30 PM Thread Starter
Robob69
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What Size Hole Saw to use on LED Tail lights

What size hole Saw do I need for Rectangle LED taillights?

I am also installing 4" round LED Reverse lights...

I sure don't want to screw this up...

Thanks
Robert

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post #2 of 19 Old 04-01-2013, 06:51 PM
SeanB95YJ
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Quote:
Originally Posted by Robob69 View Post
What size hole Saw do I need for Rectangle LED taillights?

I am also installing 4" round LED Reverse lights...

I sure don't want to screw this up...

Thanks
Robert
I'm not 100% sure I understand, because a hole saw makes a ROUND hole... can't put a square (or rectangular) peg (or light) in a round hole

now the 4" round reverse lights, those would probably take either 4 1/4" or 4 1/2... you'd have to look at the instructions (or template) that comes with the lights or the grommets

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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post #3 of 19 Old 04-01-2013, 07:00 PM Thread Starter
Robob69
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The Rectangle holes are for the top and bottom of the light then I will cut the remaining with my cut off saw..
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post #4 of 19 Old 04-01-2013, 09:04 PM
SeanB95YJ
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oh ok... in that case, you need to know the radius of the corners.

If the lights/grommets have 1" radius corners, then you'll need a 2" hole saw for each corner, then finish with the cutoff

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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post #5 of 19 Old 04-02-2013, 05:30 AM
lutzke21
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The 4 inch rounds will take a 4 1/2 inch holesaw.

But verify with your grommet instructions.

The rectangle lights, there ought to be some instructions...

-Scott

'94 YJ on 35s

Sept '14 YJOTM
July '13 YJOTM

M C L M M
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post #6 of 19 Old 04-02-2013, 09:15 AM Thread Starter
Robob69
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No instructions with these lights.... Bought them from Ebay and they are just the lights... Bright as hell but no information.
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post #7 of 19 Old 04-02-2013, 10:15 AM
roadyrob
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you can use your grommet as a pattern and cut it with a jig saw. thats what I did with my 4" round cause I'm to cheap to buy a hole saw.

Do everything with a positive attitude, it won't always work but you'll piss enough people off to make it worthwhile.

the voices aren't real but they sure have good ideas.
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post #8 of 19 Old 04-02-2013, 11:31 AM Thread Starter
Robob69
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I am so excited to put these bad boys in the jeep.... I hate the dull looking dim stock lights...

Will I need to upgrade the flasher or put a resistor in line?
I am upgrading all the lights to LED not just the tail lights
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post #9 of 19 Old 04-02-2013, 11:37 AM
SeanB95YJ
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most likely will need to change the flasher (unless someone else did before you got it)
try it without changing first.... if they flash funny (or don't flash at all) you'll need an electronic flasher... it doesn't rely on bulb resistance to trigger

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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post #10 of 19 Old 04-02-2013, 11:41 AM
flea1987
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In order to use led's what kind of wiring changes need to be made?
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post #11 of 19 Old 04-02-2013, 11:44 AM
SeanB95YJ
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no "changes" to the wiring at all... you'd just need to splice the LED connector pigtails in to your stock wiring at each light so you get the correct hi/lo of park/stop/turn

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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post #12 of 19 Old 04-02-2013, 11:49 AM
flea1987
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Ok, just curious, had seen a guy talking about adding resistors and such on another post and made me wonder
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post #13 of 19 Old 04-02-2013, 12:03 PM
SeanB95YJ
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most likely they did that because they didn't know about (or couldn't get) the electronic flasher

a standard flasher works off resistance in the circuit to make it open and close... in simplest terms it's an automatic momentary thermal switch... resistance causes heat and that makes it switch on and off.

an LED has hardly any resistance - especially compared to a standard filament type bulb, so you need an electronic flasher OR you can wire a resistor in the circuit to make the standard flasher "think" there's a regular bulb there

Sean B. - Schenectady, NY - 95 YJ, 350/700r4/NP241, JB Shorty SYE, 8.8 rear, 2" BDS, 1" homebrew shackles, Daystar 1" BL, TJ flares, 35x12.50 General Grabber AT2 on 15x10 Bart D-Truckers, Polyshield polycarbonate windshield, HD over/under crossover steering
swap/build thread: http://www.jeepforum.com/forum/f22/a...hread-1542284/
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post #14 of 19 Old 04-02-2013, 12:10 PM
bgredjeep
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I initially used a 4.5" hole saw. The lights didn't fit as tight as I would have preferred but I used some rtv and they stayed in fine.
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post #15 of 19 Old 04-02-2013, 12:53 PM Thread Starter
Robob69
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Thanks Y'all.... I am looking forward to this project!! Slowly getting her in some better shape then she was when I bought her!!!
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