To do that, a special Turn Signal switch with 6 wires instead of the later 3-wire design was used. Fits most American cars, light trucks, and vans. Inside the thermal flasher there are a few simple components: Advertisement. This amounts to placing a load resistor to ground on the left and right sides, turn signal to ground. The flasher needs to see a heavier load to work and a LED will not supply that load. Its circuit is designed for a maximum current load to power the turn and emergency signals only. What causes the problem is the that the wire is bent too sharply, which after a while causes the wire to break. Power the unit from a NEGATIVE lead from the battery or your hot terminal block on the firewall. 3 Prong Wire Diagram Wiring Diagram from 3 prong flasher wiring diagram , source:blaknwyt.co Led Turn Signal Flasher Wiring Diagram 4 Way Flashers Relay Within from 3 prong flasher wiring diagram , source:hbphelp.me mounted flashers are not used when using a 3 prong flasher. Flasher relays control the operation of indicators and hazard flashers on many cars and motorcycles. There are two tabs holding the circuit board in, just pry them loose with a small screwdriver. Use a test light and make sure that this is right. 5. The (X) is used to connect to a negative battery terminal or control wire such as a turn signal lever. 3. Type 550. Able to handle variable loads... Part #: EMF-3PIN Quantity: Price ea. 2. The entire load of the bulbs is handled by a power transistor. Solid State Electronic Flasher: These types of flashers operate using an electronic circuit. by Karim Nice. Wire in an "LED relay", which usually means it needs a separate ground pin, aka 3 wires What I'm trying to figure out is a way to do this without the 3rd wire. Does it oscillate. Let's take a look at how the turn-signal circuit is hooked up. NOTE: Most factory turn signal switches have a means for both a turn signal flasher input and a hazard flasher … Back probe the power wire that connects to the flasher unit. The flasher unit is the metal can shown in the picture on the right. Just stay with regular bulbs and it will work great. The remaining wire should be ground. Since I am using the flasher in my car, I just pulled this one out of another '97 Cougar at the junkyard. It's a 3 pin flasher by the way. 1 + $18.45: $18.45. i'm just making a 2 lamp alternate flasher for dad - the train buff has bought himself a level crossing sign (lamps and bell) and wants it wired up. When I connected it up it blew the 10 A fuse on the scooter. A Google of "motorcycle turn signal load equalizer" will bring up a dozen hits. OEM flashers work by sensing the current draw, and if the current draw is much less than the factory setup it assumes that a bulb is out and flashes very rapidly in order to alert the driver that a bulb is out. Turn the ignition switch to the On position but do not start the engine. Advertisement. If this does not correspond to the PG-3's "IN" terminal, you'll need to reverse the wires in the flasher socket or make two small jumper wires to hook it up properly. Direct replacement for OE flasher Used for converting from floor-mounted dimmer switch to turn signal switch with lift-to-dim feature Does not require a separate ground wire; uses factory wiring Meets or exceeds DOT standards. If there is an incandescent bulb somewhere in the circuit that is trying to flash, a standard flasher unit might work. 2. Here is the flasher I modified. Theory . These types of lamps draw minimal current and do not generate the heat that’s needed to "make or break" the circuit in a standard bi-metal flasher can. Identify the wire that supplies power to the flasher, and the wire going from the flasher to the turn signal switch to operate the turn signal lamps. If the terminals are not marked you can check it with a test light or ohm meter. The first type is easy to locate if it is working at all because of the clicking sound it makes. If not, the structure won’t work as it ought to be. It doesn't make any difference, as the tail light wiring isn't affected. Components may be re-added as desired - this was a stripdown attempt AFAIR. The flasher relay pulses the lights. DO NOT use the green wire from the original loom that runs from the stoplight switch to the LR tail light. It is the wire on the "top" end of the plug, closest to the driver. Step 1: The Flasher. Flasher relays have a power source terminal, sometimes labelled "B" for battery, a load terminal labelled "L" and a panel, or dash-indicator terminal, labelled "P." The circuit diagram is usually printed on the case to facilitate identifying these. 3 Pin Thermal Flasher. Connect your test light to ground. ATTiny85) to handle the flashing and use a large enough capacitor to keep the chip running in the "off" period. The turn-signal circuit gets power when the ignition key is on. -here is a pic of the 3 wire type and also the 7 wire type switches: ^ the older 3 wire type does not have a brake feed wire, and does not have a LF, LR, RF, and RR wires. From the flasher, a wire is run to the center wiper (or movable contact) of the turn signal switch inside the steering column. Each part should be placed and linked to other parts in specific way. From there it goes to the stalk on the steering column. Operate the turn signal switch in either direction (left or right). Turn Signal Flasher Wiring Diagram – led turn signal flasher wiring diagram, motorcycle turn signal flasher wiring diagram, turn signal flasher circuit diagram, Every electric arrangement consists of various unique parts. How does this flasher relay work? I'm fixing my sister's scooter and the flasher relay was broken so I ordered a new one from Aliexpress. It costs about $3 in the auto parts store and works reliably for years. There are two basic types of flasher unit. B, X, + 49 = Battery (Power Input) C2 = Hazard Switch Ground E - 31 = Ground H = Hazard Switch I = Ignition L, 49a = Load P = Pilot Lamp S = Sense Answer (1 of 1): First of all, the most important thing to start with is to identify which terminal relates to which item. Theory. LEDs draw a lot less current (and therefore power) than the equivalent incandescent bulbs, so the OEM flashers don't recognise them and act as if a bulb is out. Note this is for 1 cell. One wire will flash with your turn signal. Wire your 2 wire signal (+) to the wire that flashes (signal lead) and the ground to ground (or signal base body). Q2 grounds Q1's base - noyt good for high Vsupply. Because the bulbs consume so much power, they generate a lot of heat. And just out of curiosity, how does the flasher unit work?" Thanks for the help - but cheap and easy is the go here - … It only has an input from flasher, and a R wire and L wire. Or get an electronic flasher that is designed for LED lamps. The flasher has 3 terminals and a wire as connections which you can see on the flasher case if you look closely. This may work but it's a really bad way of going about this: For example, there are many round 3-prong flashers that have the same size and shape, and the prongs look the same, but they're actually not compatible. The 3 prong flasher is ONLY REQUIRED if you plan to use the indicators / pilot lights in the body of the turn signal switch itself. You can try to pull the pin out of the connector, strip the wire and try to get it back in the plug, but often there isn't enough wire to do that. One is operated by a piece of wire or a bimetallic strip which expands and contracts as it is heated by the current; the other is a relay operated by a transistorised circuit. It has three screw terminals, "B" for Battery, "L" for Load, and "P" for Panel (dash indicator lamp). Answer: Of those 3 wires; one is on with your lights or always on - that's your running light. The low-current hazard switch enables the relay to send current through the lighting circuit to the flasher. Posted by 1 year ago. Close. How Turn Signals Work. A flasher relay is powered off of the automobile's 12-volt DC main. Any further demand or overload will trip a circuit breaker or blow a fuse or fusible link. 3 Pin Electro-Mechanic Flasher - 3 pin electro-mechanical 12 volt flasher will last up to 10 times longer than thermal flashers. This will not work on thermal flashers. 4. Fits in round flasher socket; 60 to 120 flashes per minute; Flash rate is electronically controlled; Heavy-duty contacts; external wire provides ground; Steady flash rate for all LED and incandescent loads; Bulk Pack; Ideal for vintage cars and trucks; 60 to 120 flashes per minute; Molded base and terminals; Flash rate is electronically controlled The Wiring. Advertisement. 3 Pin Thermal Flasher - 3 pin thermal 12 volt flasher. If R2 Ca time constant is short you have a boost converter and steady LED driver (it seems visually). Advertisement. In this case you can buy a load resistor to trick the flasher to work. It is grounded (positive or negative ground) to match the rest of the car's electrical system. In response to these pulses the power transistor switches the indicator lights ON and OFF alternately producing a blinking effect. Consider that most people need two or three strands to do a tree and five or 10 strands to do a house and you are talking about a lot of power! The flasher is the part that makes the lights flash on and off. Archived. Add Tip Ask Question Comment Download. The circuit looks like this: This arrangement was also used on (US) Busses all the way thru the 1971 model. The solution to this problem is the installation of a no-load LED flasher can into the flasher system. The converters aren't made to run the extra voltage. Note: Don't try to run them with LED's. The circuit is in fact an oscillator which provides switching pulses to the power transistor. The load on the flasher determines how much heat is generated, having too many bulbs can cause the flasher to blink unevenly (bulbs on longer then off). Ideas that came to mind: 1. Add Tip Ask Question Comment Download. All you're worried about is the brake and turn signal wires. When power runs through the signal light circuit it goes through a module or flasher that only emits a pulse of power rhythmically. Be sure to change the flasher bulb inside the Signal Stat to 6 volt. How does this flasher relay work? If you have a strand of 50 5-watt bulbs, the strand consumes 250 watts! Use a micro controller (ex. This switch had to route the flasher output to the Brake light being used for Turn indication while leaving the remaining Brake light to function from the Stop light switch. The flasher operates from internal heat on a tungsten bi-metallic "strip" that makes or breaks the contact at the switch side (or "power output" side) of the contact. Retain the original brown wire in the harness that feeds the tail lights (red part of the A lens). The power goes through a fuse panel into the thermal flasher. Click for larger picture (and yes I know there's a wire loose). Prev NEXT . I thought the cheapest way was a car flasher can and a relay. On motorcycles they use the term "turn signal equalizer". 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