1998 Blazer-S10 Exterior Lights Circuit

After installation in the car (not running but in reverse with the emergency brake engaged), the system functioned well. However, when the car was started and reversed out of the garage, the beeping frequency became erratic while tapping the brake...

Voltage Regulator For Cars And Motorcycles

This regulator circuit can be used on an alternator that has one field terminal grounded. When the input voltage becomes too high, Q1 conducts, and the base of Q2 is driven toward ground, reducing the voltage fed to Q3. This...

1964 xm

I am wiring up my 1964 XM and am unsure where the wires connect for the temperature gauge. On the back of the gauge, there are labels I, S, and A. The wires are colored Green/Black, Red/White, and Yellow/Blue. Do...

Vehicle Interior Lighting With Switch-Off Delay

Nowadays, a switch-off delay for vehicle interior lighting is a standard feature. However, certain models with minimal settings or older vehicles leave users in the dark as soon as they enter and close the door. This situation calls for an...

Automatic Car Head Lights Turn-off Circuit

The circuit diagram for the automatic headlights turn-off circuit is presented here. This circuit can be installed in a car. The automatic headlights turn-off circuit is designed to enhance vehicle safety and convenience by ensuring that the headlights are automatically turned...

Automotive Electrical Tester

This compact tester is designed for checking vehicle electrical circuits. Two LEDs indicate whether one of the clips is connected to the positive supply line (red) or to ground (green). The unit is powered by the vehicle battery. It is...

Automotive charger for ni-cad battery packs

The number of silicon diodes across the output is determined by the voltage of the battery pack. Each diode is considered at 0 volts. For example, a 10-volt pack would require 10/0 = 157, or 16 diodes. In the context of...

Car Courtesy Light

A car courtesy light in a standard vehicle without a board computer functions simply: when the door is opened, the interior light turns on, and when the door is closed, the light turns off. For convenience, it is beneficial to...

Automotive burglar alarm

The alarm activates after a 13-second delay and remains active for 1 to 1.5 minutes before automatically resetting. It can also be deactivated and reset by opening and reclosing switch SI. The described circuit functions as a delay-triggered alarm system, incorporating...