C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Having trouble with Export tail light wiring

Thread Tools
 
Search this Thread
 
Old May 9, 2016 | 11:58 AM
  #1  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default Having trouble with Export tail light wiring

Hey guys I'm still stuck doing my tail light conversion, i have the all orange turn signals outboard on my 85, i was able to pull a few old threads from many years ago with a somewhat helpful diagram/schematic on how to convert, unfortunately for me the few members that PM'd or emailed the diagram they had are no longer logging.


Anyone able to help?

Last edited by L98Justin; May 9, 2016 at 12:08 PM.
Reply
Old May 9, 2016 | 12:02 PM
  #2  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Default

Your problem is what? Single "TAIL/STOP" inboard and TURN only outboard is the desired. You purchased the EXPORT corners recently I believe so ....... your issue I believe needs better explained.

Last edited by WVZR-1; May 9, 2016 at 12:07 PM.
Reply
Old May 9, 2016 | 12:12 PM
  #3  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Originally Posted by WVZR-1
Your problem is what? Single "TAIL/STOP" inboard and TURN only outboard is the desired. You purchased the EXPORT corners recently I believe so ....... your issue I believe needs better explained.
yes outboard are the amber Turn only, inboard needs to be the stop function only. I need a easier diagram to follow to cut and splice where it needs it

and yes the Export side markers are already on.
Reply
Old May 9, 2016 | 12:19 PM
  #4  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Here are the export lights for the side markers and the rear outboard ambers, hopefully if anyone else is interested in the swap they can see how the look together




Reply
Old May 9, 2016 | 07:15 PM
  #5  
Hot Rod Roy's Avatar
Hot Rod Roy
Safety Car
15 Year Member
 
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Default

The wiring to your new amber TS lights will stay as wired from the factory. The wires for your "inside" red stop lights will need to be rewired to connect them to your center stop light.
You'll probably need a new TS flasher, because the load will be reduced on the flasher, and it will act like you have two burned out light bulbs. The TS lights will probably go on, but won't flash.

Reply
Old May 11, 2016 | 10:51 PM
  #6  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Originally Posted by Hot Rod Roy
The wiring to your new amber TS lights will stay as wired from the factory. The wires for your "inside" red stop lights will need to be rewired to connect them to your center stop light.
You'll probably need a new TS flasher, because the load will be reduced on the flasher, and it will act like you have two burned out light bulbs. The TS lights will probably go on, but won't flash.



Thanks for the info but I've been finding old threads about cutting a white wire unfortunately no one had a detailed step by step process so I'll get it documented when this rain stops if I'm able to succeed... I sent out a email to eurovette asking for a diagram no luck just yet hopefully someone can chime in and help me finish this
Reply
Old May 11, 2016 | 10:54 PM
  #7  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

This is the most helpful unfortunately no pictures but I'm having trouble following it, hopefully I don't have to take this to someone else

Reply
Old May 12, 2016 | 01:38 AM
  #8  
Hot Rod Roy's Avatar
Hot Rod Roy
Safety Car
15 Year Member
 
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
Default

Originally Posted by L98Justin
yes outboard are the amber Turn only, inboard needs to be the stop function only.
So I'm confused. No tail lights? Your first post says you're working on an '85, but the pictures show a late model C4, which has a center stop lamp. Which is it? Big difference! My previous post is confusing because I'm confused.

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old May 12, 2016 | 06:04 AM
  #9  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Default

I sent the OP an email through the forum mentioning "I understood" and thought it might be easier handled through an email exchange. I didn't want a forum post to be misunderstood later because the approach is different on cars with ABS and '84 & '85 less ABS.

The OP's "snip" of a previous post by "Ray Quayle" explained it well BUT I had questions as to how/or if the CHMSL was functional and what sockets/lamps had been used in the modification. That would change the procedure. Maybe? The same function wires but maybe different approach to "the what needs snipped".

I hadn't seen Ray's post earlier (the OP just added that).

I sent the OP a PM a while ago and we'll see.
Reply
Old May 12, 2016 | 09:18 AM
  #10  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Default

If this were an '84 or '85 with no ABS and stock four lamp stop/tails it would need the WHITE "snipped" at the SLS and a 2M (14AWG) LT BLUE (because it matches for future use) needs to be run from the SLS to the rear of the car.

At the inboard left both YELLOWS need "snipped" and the YELLOW from the outer spliced to the YELLOW from car harness for the LH Directional. The same needs done on the right substituting DK GREEN for YELLOW. Directional and hazards should now be functional on the high filament, but might require flasher substitution. If you need to add wire length to make the splices do yourself a favor and "color match" using correct gauge.

For STOPS the LT BLUE from SLS needs "spliced" to the YELLOW (inboard left) and DK GREEN (inboard right) for STOPS. Not in this diagram and I see no need to add the diagram is the BROWN to the TAIL FUNCTION on all four lamps. At the OUTBOARD (ONLY) the BROWN needs "snipped". Terminate the spare "danglers" (YELLOW/DK GREEN) at the inboard L/R appropriately.

This configuration assumes that the original sockets and two filament bulbs are used. STOPS and DIRECTIONAL are on the HIGH Filament in each of the required.

***OP - Not knowing how your lamps and CHMSL are currently done changes this somewhat. MAYBE - I know of no way aside from using an after-market device (diode array of sorts) to make the CHMSL functional as it sits on your car. Does it work now? Do you have two filament bulbs in all 4 tails now? The WHITE needs "snipped" and the dedicated circuit added SLS to include your CHMSL along with the INBOARD wiring to make the SYSTEM work as you'd like if you wanted to include the CHMSL. Eliminating a PAIR of STOPS I'd think maybe makes the CHMSL functionality a requirement.

This diagram is from the '84 FSM, it's in color so made explanation maybe easier. '85 should be identical. An '86 or later with a CHMSL and ABS not much different but is different.

Name:  '84 TAILS.png
Views: 11417
Size:  595.4 KB

I enjoyed RQ's response to the "original poster" in this thread:

https://www.corvetteforum.com/forums...lp-needed.html

I was once told that the LT BLUE might have been present at the SLS on '84 and '85 but never had a reason to check. If yes on an '85 I'd check at C209

Last edited by WVZR-1; May 12, 2016 at 10:23 AM.
Reply
Old May 12, 2016 | 08:01 PM
  #11  
whalepirot's Avatar
whalepirot
Melting Slicks
15 Year Member
 
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
Default

Originally Posted by Hot Rod Roy
The wiring to your new amber TS lights will stay as wired from the factory. The wires for your "inside" red stop lights will need to be rewired to connect them to your center stop light.
You'll probably need a new TS flasher, because the load will be reduced on the flasher, and it will act like you have two burned out light bulbs.
This was how I did my '84 when it had the export tails.

I ran a new wire from the brake pedal to the brake lights (inners) and clipped the TS wires on them and the brake light wires on the outers.

Pretty simple.
Reply
Old May 13, 2016 | 09:34 AM
  #12  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Originally Posted by Hot Rod Roy
So I'm confused. No tail lights? Your first post says you're working on an '85, but the pictures show a late model C4, which has a center stop lamp. Which is it? Big difference! My previous post is confusing because I'm confused.

Sorry brother the car itself and all the wiring is a 85, the bumper came from a 94 but it is a 85, terribly sorry about the confusion

thanks to everyone who is taking time to help my confused ***
Reply
Old May 13, 2016 | 10:08 AM
  #13  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Did your TS lights illuminate during night driving when the red are illuminated?

Originally Posted by whalepirot
This was how I did my '84 when it had the export tails.

I ran a new wire from the brake pedal to the brake lights (inners) and clipped the TS wires on them and the brake light wires on the outers.

Pretty simple.
Reply
Old May 13, 2016 | 10:55 AM
  #14  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Default

I got your email and mentioned what to do using the 2 - 1156 CHMSL from the '94 OE soft fascia. You should be all set, using the diagram and the splice of the LT BLUE (my suggestion) front to rear with the INNERS and also the LT BLUE of the CHMSL (CHMSL I believe is LT BLUE when in the soft fascia). You'll need to add the ground for the CHMSL sockets to where ever you might choose.

I mentioned NOT changing the flasher until it was determined the directionals got "lazy" or whatever and checking the HAZARDS to check their flash rate.

Originally Posted by L98Justin
Did your TS lights illuminate during night driving when the red are illuminated?
I covered this earlier when I mentioned that the TURNS (brown to the outer sockets need "snipped" and terminated properly. The BROWNS aren't in the wiring diagram because the diagram is TURN/STOP only.

YOU WILL HAVE NO TAILS ON THE OUTER AND AMBER FACING REAR ISN'T LEGAL EITHER!!

Last edited by WVZR-1; May 13, 2016 at 11:06 AM.
Reply
Old May 13, 2016 | 11:46 AM
  #15  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

Originally Posted by WVZR-1
I got your email and mentioned what to do using the 2 - 1156 CHMSL from the '94 OE soft fascia. You should be all set, using the diagram and the splice of the LT BLUE (my suggestion) front to rear with the INNERS and also the LT BLUE of the CHMSL (CHMSL I believe is LT BLUE when in the soft fascia). You'll need to add the ground for the CHMSL sockets to where ever you might choose.

I mentioned NOT changing the flasher until it was determined the directionals got "lazy" or whatever and checking the HAZARDS to check their flash rate.



I covered this earlier when I mentioned that the TURNS (brown to the outer sockets need "snipped" and terminated properly. The BROWNS aren't in the wiring diagram because the diagram is TURN/STOP only.

YOU WILL HAVE NO TAILS ON THE OUTER AND AMBER FACING REAR ISN'T LEGAL EITHER!!
Thanks Dave, hopefully the ER will leave me with enough energy tonight to do a little bit of work after my shift, if not I'll have some results for you guys in a few days... Again thanks everybody for the help!
Reply
Old May 13, 2016 | 09:37 PM
  #16  
whalepirot's Avatar
whalepirot
Melting Slicks
15 Year Member
 
Joined: Jan 2008
Posts: 2,054
Likes: 120
From: AZ
Default

Originally Posted by L98Justin
Did your TS lights illuminate during night driving when the red are illuminated?
No

This caught the E-flashers on. outboard amber Turn only, inboard stop function only.









Last edited by whalepirot; May 13, 2016 at 09:39 PM.
Reply
Old May 16, 2016 | 02:06 PM
  #17  
L98Justin's Avatar
L98Justin
Thread Starter
Pro
 
Joined: Apr 2014
Posts: 719
Likes: 67
From: Helotes Texas
Default

No luck yet guys with all the rain in South Texas right now i haven't been able to even pull off the car cover
Reply

Get notified of new replies

To Having trouble with Export tail light wiring





All times are GMT -4. The time now is 09:36 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE