Having problems with your 1986 Toyota 4Runner ?
Wont start, electrical diagram - 1986 Toyota 4Runner
Some genuis tapped into your computer with an aftermarket alarm. The electronics were inferior and now are corrupting your cars electrical system.Good luck finding the routing they did. Sorry for such a blunt answer, but that has been my findings with 9 out of 10 of the hundreds of cars I have bought and sold.
Repair Help & Product Troubleshooting for 1986 Toyota 4Runner
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.