Headlight Alternating Relays

[Christon1987]

Anybody know what relays i would need to use to make my Headlights alternate?

Like Emergency Vehicles are fitted with.

 

[audioguru]

It is against the law for your car to impersonate an emergency vehicle.
It is OK for a tiny toy car.
Maybe it is OK for a tiny SMART car, since it is a tiny toy car (hee, hee).

I laugh whenever I see a tiny toy SMART car.

 

[Christon1987]

It is against the law for your car to impersonate an emergency vehicle.
It is OK for a tiny toy car.
Maybe it is OK for a tiny SMART car, since it is a tiny toy car (hee, hee).

I laugh whenever I see a tiny toy SMART car.

This will not be used on the road. It will be for shows and trackdays only.

 

[Willbe]

Anybody know what relays i would need to use to make my Headlights alternate?

Each headlight takes ~3A, surge ~40A. Maybe PN 45-488 from www.hosfelt.com would work: $0.59.

If you have some small current running through both headlights continuously then the surge current will be way less.

You'll need a driver circuit with a coil spike suppressor [a fast diode or an MOV or a resistor], or a smaller relay, that can handle the larger relay coil current.

I'm not affiliated with Hosfelt.

 

[audioguru]

The flashing light bulbs will quickly kill the battery.
Have a nice long walk home since the battery will be dead.

 

[Mikebits]

The flashing light bulbs will quickly kill the battery.
Have a nice long walk home since the battery will be dead.

Assuming the engine is not running, no? The last time I saw those flashy lights was at 80 mph, and the cop had no problem restarting his car after giving me my ticket.

 

[audioguru]

The cop car probably had its engine running.

 

[3or24fan]

If you live in the US, go to the local NAPA auto parts store and purchase a flasher unit for a school bus. That's what I did to make my headlights flash. (I'm on the local Fire Department)

 

[Christon1987]

I figured it out whilst i was laying in bed last night. Use 2 relays, 1 flasher relay, 1 SPCO relay and 2 diodes.


It will not kill the battery because i made the runlock system that the police cars have too.

 

[Willbe]

i was laying in bed last night

Lying or laying? Not the same. . .

 

[gerty]

You can probably buy it cheaper than you could build it :**broken link removed**
Only $19.95 including enclosure and switch.

 

[Torben]

Lying or laying? Not the same. . .

Free eggs! mmmm. . .




Torben