Front and Dash lights come on when breaking

[ahruizguerra]

Hello..

I have a serious electrical problem in my 89 supra turbo, and maybe someone in this forum knows how to fix it. Every time I hit the break pedal, all my exterior lights (front yellow, side yellow and red, and of course the rear lights including the license plate lights) come on everytime i hit the brake; even the compartment glove light comes on; but the map lights does not. After a couple of months, the rear light relay (white box) burn a welded point in one of the thicker cable (see picture), and when this happen, All my rear lights do not work. I have to open the relay and resolder that connection. Have any of you have any idea how to fix this??? I already replace the main light/turn/wiper switch on the back of the wheel, but the problem is still there.

Any suggestion...

Thanks....