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When LED�s are installed in place of 1157 bulbs the bi-metal 552 flashers generally will not trigger from the removal of the 1157 bulbs. Hotronics PG-3 is an electronic flasher, containing no shorting resistors and like a radio cannot work with the power hooked up backwards. Should you find your panel or plug crossed, remove the connecters from the flasher socket and switch them to the correct positions. If that cannot be done, simply make 2 jumper wires to connect to the PG-3 and plug the jumpers into the fuse box flasher plug socket in the correct D.O.T. positions. Turn the engine back ON and place the turn lever in a direction, the PG-3 will start flashing and remain flashing until the turn lever returns to the neutral center position. WARNING: NEVER use ANY �Load Equalizer type Shorting Resistors� that connect to each side signal wire and go to ground, they short circuit the electrical system, drag the voltage low, create extreme amounts of heat and have set fires and melted wiring in both automobiles and motorcycles in attempts to load thermal 552 flashers. You would not take your jumper cables, connect them to the battery and touch them together, what a spark that would be, that�s what those shorting resistors are doing. Shorting resistor will fatally damage your electrical system; your brake and signal switch contacts and destroy the PG-3 relay contacts. Be Warned! Be Safe! Be Smart! Using the PG-3 with an all LED application or running relays for larger lighting loads; If you change every turn light to LED and there is no longer a small blinker bulb in the dash or up front, the PG-3 will trigger off a typical Bosch relay. (Completely safe!). LED�s have NO filament; they�re not like a bulb! LED�s produce an arch that jumps a gap, with a reflector behind and that�s what we see glow. Since the PG-3 looks for a small electrical path, like from a small dash bulb. Removing all bulbs will require installing a relay to each signal side and the PG-3 will sense the electrical path has been completed thru the relay coil, turning ON, and then it begins flashing the LED�s. Follow the easy to read, relay-wiring chart supplied with each PG-3 flasher when using relays for an �ALL LED� application. (No longer any bulbs in the signals circuit). Using the small relay coil as the established electrical path, instead of by a small filament bulb, triggers the PG-3, which outputs, pulling in the relay coil and carrying even higher amperage loads thru the relay contacts to the rear signals. This method is 100% safe, creates NO Heat, NO Shorting, No Fires, No Melt downs and carries enough current to light up a Semi tractor/trailer. Safely. Use only one relay on the left side and one on the right side, place your relays on the rear so we can power up large or multiple LED cards and also carry high amp loads to supply trailer light if needed. Warning, Never use battery chargers for testing the PG-3 without the charger being connected to a battery, this is absolutely necessary. Battery chargers are NOT filtered DC sources and give off an AC sine wave that will damage semi- conductors in the electronics or give erratic operation of all DC electronic devices; this includes radios, amplifiers, ECM�s and engine management computers. Always have a battery in the circuit, and then if needed to bring voltage up, connect the charger to the battery. Also be sure battery cable connections are clean and tight. Note: Relays are NOT shorting resistors and should not be mistaken for them! Always use relays with the PG-3 for an �all LED� application! (No bulbs for signals.). NEVER use shorting resistors with ANY electronics device, including the PG-3 or any other Hotronics device like the Self Cancel Turn Signals or Taillight Sequencer. Why step into the present and future with the LED�s and then roll back the Neanderthal clock using Load Equalizer, short-circuiting resistors with large heat sinks! Kind of defeats the purpose of using low current draw LED�s, by putting in, power robbing, short-circuiting, heat generating Load Resistors, Right! Don�t become a victim! Do it right the first time, so your Hotrod or motorcycle won�t get burned too.
Copyright Hotronics 12/03
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