94 toyota 4x4 electrical problems

My truck starts fine, however if you turn on head lights or turn signal or hit the brake pedal or in some cases turn on the radio ...... the truck stops running EVERTHING shuts off. the headlights the motor ..... its as if you turned the key off and back on for 1 or 2 seconds ..... 2 electrical techs have looked at it .... they cant find it .... Iam a technician I cant find it ..... I want to drive it off a cliff ..... please help ..... this problem was thought to have gone away last year .... but its back ..... what to do ..... any ideas

this electrical problem also shows up when trying to start my truck ...... I will attempt to start and nothing ....no click no nothing then .... it will start just like that ..... this truck has a keyless entry alarm installed in it and a servo controlled rear window that is disconnected and has been for years ......

Hey, I thought this might help. I was having the same EXACT problems as you are with my lebaron, and after much trouble shooting found it to be corrosion and water built up between the battery terminal and the terminal post, because somehow the post donuts had become wet.
The minute I cleaned out the the terminal and brushed the posts I had no problems. Also if you have the good ole oem toyota slider on the back, those are prone to loosen from the chassis and you may have a live wire in some water. Something to check into...
James

this electrical problem also shows up when trying to start my truck ...... I will attempt to start and nothing ....no click no nothing then .... it will start just like that ..... this truck has a keyless entry alarm installed in it and a servo controlled rear window that is disconnected and has been for years ......


If you have not fixed it........
Check all ground wire grommets, especially the starter and solenoid. What happens is that the current gets to strong and shorts out because it is not tight.
Good luck.