To find it, you'll need to consult a wiring diagram specific to your 1988 Toyota pickup model (there were several variations). These diagrams show the color-coded wires and their connections. You can find these diagrams in several places:
* Haynes Repair Manual or Chilton Repair Manual: These are widely available and provide detailed wiring diagrams.
* Online forums: Search online forums dedicated to Toyota pickups (like Yotatech) for your specific year and model. Someone may have already addressed a similar issue and posted a relevant diagram or photo.
* Factory Service Manual: This is the most comprehensive resource but can be difficult and expensive to obtain.
General locations to look:
* Steering Column: The turn signal switch itself is located on the steering column. The wires connecting to this switch will be involved in the turn signal circuit. You'll likely find these wires by removing the steering column shroud (after disconnecting the battery!).
* Flasher Relay: The flasher relay is a small electronic component that makes the turn signals flash. Its location varies by model year, but it's often under the dash or in the fuse box. The wires connected to this relay are part of the turn signal circuit.
* Tail Lights and Headlights: The turn signal bulbs themselves are connected to the wiring harness at the lights. Tracing the wires from the bulbs back toward the front of the truck will eventually lead you to the main circuit.
Important Safety Note: Before working with any vehicle wiring, disconnect the negative terminal of your battery to prevent accidental shorts and damage to electrical components.
Without knowing the specific model of your 1988 Toyota pickup, it's impossible to give a more precise location. Use the resources mentioned above to locate the correct wiring diagram for your truck.
