Jump to content
The mkiv Supra Owners Club

Interior Wiring Help


Recommended Posts

I’ve got a 1995 Toyota Supra Uk Spec that I bought as a project and am coming towards completion now.

Before I put my dashboard back in I decided to check everything worked and frustratingly it doesn’t.


If you turn the headlight dipped beams on they do not work. Then if you pull the main beam stalk towards you both the dipped beam and main beams come on. 
If you try to leave the main beams on they don’t stay on.

Someone said integration relay. As it’s a UK spec it is the same as a Celica, I managed to get one easily enough. Replaced it an no change.


The other issue I have is when you plug the dimmer switch in it blows the fuse on the interior fuse box. I’ve tried 2 dimmer switches (one came with the car, other is IS300)

The wiring on this cars interior has had a life with previous immobilisers etc. I believe this could be a simple as a short. But I’m not the man for finding shorts or solving wiring issues.


If anyone has any suggestions please comment!

And if you’re (or you know someone) an expert that will come out and help sort the car I’m willing to pay!

Located not far from Northampton

Link to comment
Share on other sites

If you can get the car to SRD at some point then I can take a look. 

Having main beams come on with dipped beams when you pull the stalk is normal. If the car has had an immobilizer/alarm previously, then start by ripping that shit out and putting every back to stock and start fresh as it were. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.