Sounds like a stupid question, but I still did not receive my repair manual yet, and the paint job is waiting!!
I have to modify my taillights to european standards, but I can´t get them off!!! I suppose It should be easy in order to replace a lamp or so, but can´t find how.
Also needed URGENTLY the schematic diagram of the light system. Is that on the net somewhere? We need to have one tail light ON permanently, one orange blinker and one red brake light. So the wiring really has to be changed, hard without a diagram to start with.
Regards
Nico

 

Remove the license plate and the back up lights. Reach in the hole with a 1/4" drive ratchet and 10 mm socket. Two bolts hold each light in place.

 

Aaaahhh, So that is the trick.
Gonna try if my arms are long enough
Thanks a lot

Were long enough but too fat. Needed to take the bolts that hold the bumber in place out and pull the bumber aft to make more space. Than I could remove the fist light and through that hole I could remove the second. People with muscular or short arm are a little pittyfull if they have a broken bulb in there taillights!!

 

Where abouts in Europe are you that requires you to have amber indicators?







.

 

I am in Spain. But I think that is is true for many countries here. Also the problem that the brake light blinks when I indicate and brake at the same time is not allowed. I am afraid that I have to find out where the brake switch is located and that I have to pull more wires. I really have to separate the blinker, the brake lights and the tail lights. They have to work independently.
The C4 1987 is my first vette and I do not have the book received yet I ordered in the USA. So 90% of the time is spend by searching how and where.

 

I will try and find the wiring diag that I used when I did mine if I can cos it was a long time ago






.

 

Here is a link to a company that sells a "Euro tailight harness". I know nothing about it but maybe it is what you need.
https://www.casperselectronics.com/M..._Code=Corvette

 

I did this conversion when I put my Rick Mears Special body kit on. Believe me, you do not want to pull the bumper off, just to get to the lights. The above advice is correct. You can also, remove the rear wheels and the rubber inner fender covers easily with a few bolts. You are heading that way anyway by saying you will remove the rear bumper. With a long extension you can get to those 10 mm bolts on the side of the car. To remove the bumper you have to also remove the gas filler lid. You need a skinny long arm to get to the 10 bolts along the top of the bumper. So you will not be able to do that either with your arms. I have long arms, but they are a bit large too. I got alot of scratches removing the top bolts. I used the Euro Harness, and it required getting into the wiring harness plug that is located above the right rear speaker. but you have to pull the carpet and sunshade hardware out also and rails on the passenger side. There were twice as many bulbs with the new lights too and I had to make sure the right ones went in the right holes. There are now two bulbs per lens instead of one. With no factory diagram I had to draw out what went where. You have a main light line. A brake light line, and two turn signal lines. plus the black ground line that goes to everything. I will look for the drawing I made. My drawing is crude but it works.

 

On my conversion for RHD I have only one bulb per light.
The outer has a single filament for the indicators and the inner has a double for tail / stop.
the stock wiring diagram shows 2 wires to each light.Having never seen the stock lights in action I assume the outer ones are indicator/ tail and the inner ones stop / tail.
If someone can confirm this I can work the wiring out from the diagram.
Email me and I can talk you through it
vetteoz@optusnet.com.au

 

I will leave it here for a few days

http://members.shaw.ca/agent86/Exterior%20Lights.pdf

 

One of the best things you can buy for your car is a GM Service Manual. Go to www.helminc.com to order a set of manuals. If they will not ship to Spain, you might try Mid-America Motorworks www.mamotorworks.com

eBay is another possibility for used manuals but be sure to get the books with the red covers. Manuals with the white covers are a preliminary version and may not have all of the updated information in them. The books from the retail sources are the red cover updated production versions.

These manuals are the same ones that the GM service techs use. The manuals contain detailed repair information on each system in the car. One entire book is devoted to driveability and electrical repairs. The electrical portion has all of the wiring diagrams and locations of each electrical component and specific electrical troubleshooting steps.

 

Hey, that is great. I did start to figure it out, but it really is quite complex, because the warning ligts are involved as well. And these are modified with an other realy in my vette making it even harder to follow. Looking forward to your diagram, thanks.
I really think I know what you mean. I took the taillights out and I felt like a snake man to do it. Also to take the door handle out is quite difficult. To tell you the truth, I was cought by my vette. The phone went when I had my hand in the door , but could not get it out anymore. I was lucky that nobody saw it, felt like a fool trapped in my door!!

 

I did order the book from mid america, but that was now two weeks ago. Still waiting. They said it was sent, so I guess the customs here in spain have it to figure how much tax I have to pay. Have more experience with that. And if the tax is payed while it shouldn´t, the say it is no tax but it are service cost. Spain is different!!

 

I am really glad with those diagrams and the description. I saw that I only may have to add one wire for the brake light and disconnect this wire from the steering switch assembly (wire 17) And it may even be close to the back for the high level stop light (that I don´t have, but the wire may be there.) Than the turn lights and hazard lights work independently from the brake lights and I only have to modify the lights itself.
Really great, thanks a lot.
Nico

 

Thanks for the info, but I really do not want to replace the harness. It is a real major job to do that, so I like to pull one or a few wire extra and modify the lights.
Regards,
Nico

 

NICO,
You don't need any extra harness, I converted my 87 some 12 years ago from an article in either corvette fever or vette, don't know which one though. I made the rear turn signals the two innermost tail lamps. Much easier and I actually prefer the look. As the original light bulb holder has two feeds, one tail and the other the brake, all that is required is to cut and tape up the tail lamp wire from each bulb holder used as a new indicator and use the brake/turn signal wire as the 'new' rear turn signal. I cant remember all the details, but I remember disconnecting a white wire and taping it up from the brake lamp switch. This removed the brake lamp feed to the tail lamp somehow. There was a few other little bits to do, possibly another alteration in the wires at the tail, but it was so long ago, I can't remember. I know it only took me a couple of hours to do though! and no additional harnesses where required. I also change the flasher unit to a different one to slow the flash rate down to European standards, as the US one was too fast. If I come across it, I will let you know.
Dave

 

The vette I have to convert has two wires each light. The low wattage are all four in parallel and used for taillights. The high wattage are two by two in parrallel and used for brake, blinker and emergency. So they work for both left and both right at the same time.
I now add a ring of LED´s (amber) to the outer lights for blinker and emergency and connect the wires that now go the the high wattage filaments to these LED´s. Than I will disconnect the brake line (17, white, P in C104) turn/hazard switch assy in order to disable the brake lights function to the turn lights. Now the turn / hazard lights should function correctly. I hope that I only have to pull one line more from the brake switch to the high wattage filaments (all four now in parallel). This line may already be aft for the high level brake lights (wich I do not have) wich is lie 20.
Greetings,
Nico

 

Ok dave, I agree partly. Because there is no separate wire from the brake to the tail, I have to pull one wire more in order to activate the brake line. This is originally done using the blinker wires because they are combined. See also the reply below.
Beside that, I have to change colour of the blinker to amber wich I intent to do using amber LEDS, I do not wamt to change too much at the original lights and red is nor allowed.
regards,
Nico