Cornering Light scheme for Mustang
Brian Fraser 2020
I have wanted a right turn cornering light for my 1991 Mustang for several years.Cadillacs have similar lights for both left and right turns as standard equipment. In my case the light illuminates an area I am turning into at night that is not adequately illuminated by the headlights. The lamps are mounted in two holes in the right front plastic bumper shroud. Light is switched on when the right turn signal is activated. The pulse from the turn signal goes to a relay-capacitor-transistor circuit with a time constant of about 3 seconds so that the light stays on continuously during the turn and then extinguishes about 3 seconds after the turn signal stops.
I used 4300 mF and 680 ohms to get the right time constant for the Darlington
|The parts were mounted on a piece of Masonite. The four terminal posts were made from segments of plastic pipe, 1/2" coupling nuts (10-24) and epoxy fill. At the bottom is a 6 position barrier terminal strip. The whole thing fits into an aluminum project box with provisions to the keep the board in place and properly insulated.|
|The box that houses the controller board is a BUD|
Industries CU-3008-A Aluminum Electronics Minibox,
7" Length x 5" Width x 3" Height, Natural Finish ( https://www.amazon.com/gp/product/B005T7T0Y6/
ref=ox_sc_act_title_1 ) The 3" height was easily cut down to 2”so that it would fit under the front seat.
The cornering lamps shown below the right front bumper are Ambrother LED Pods Light Bar 4-Inch 120-Watt lamps (12,000 lumens each). Each consumes about 1.8 amps @ 12.6 VDC (23 watts each). Both lamps light up during a signaled right turn if the headlights are on. They go off about 3 seconds after the turn signal resets.