Provides hands free operation, no need to remove gloves to search for keys, there are none!
· Provides magical like starting for the owner only.
· Virtually no chance of drive off theft, unique Identification Code provides security, Over 1 gazillion combinations.
· No keys, no scratched paint just leave credit card sized transponder in wallet or back pocket and press starter button, no codes or numbers to remember.
· High Cool Factor – NO KEYHOLE - invisible starting system for a cleaner look. No keyhole to short out while washing your bike! No wiring harnesses fried!
· No key fob, No need to press buttons on a remote or find and remove a remote control device from a pocket. Just get on your bike and ride!!!
· Card Key Transponder in your wallet never needs a battery! You can't leave home without it. In addition if you left your wallet in the bar, it will obviously remind you to return there and get your wallet back!
· Simple wiring procedure just like wiring in a key switch.
· This is a ground based system which reduces ground shorts and electrical fires.
· Antenna can be read from as far away as 12 inches from center of antenna. Place antenna inside the seat.· Hermetically sealed for harsh environments.
· Cannot be defeated with a screwdriver or lock pick.
· Internally, two microprocessor voting system prevents tampering with.
· Works in conjunction with our motorcycle light controller for battery saving, theft deterrence and seamless operation.
· Can work alone without our light controller, replaces conventional key switch
· All Solid State, no moving parts
· Automatic Over temperature cutoff
· Automatic Over Voltage or Under Voltage shutdown
· 16V Reverse Polarity power protection on outputs
· Operation from 3 Volts DC to 27 Volts DC
· Standby current <5.0uA
· Static Discharge protection to 15 kV DC
· Can supply 100 Amp DC continuous to a relay or motor
· Can supply 100 Amp DC continuous to an ignition system – resistive or inductive loads
· Requires antenna placement in seat foam – 2 inch clearance from metal backing required minimum.
· Key Card replacement and serial number database maintained by BulletProof Electronics to prevent theft of Key Codes.
· Module size 3 1/4" x 2 3/8" x 1"

Does the antenna have a connector on it so the seat can be removed from the bike with minimal difficulties?

The antenna has a 4ft long RG174 coax lead. That should be sufficient in most cases to allow the seat to be removed and laid alongside the bike for service operations. If the ARSE control module is placed in an accessible place on the bike, then the antenna can be unscrewed from it. An alternative plan would be to use an SMA or SMB connector somewhere on the coax to give the coax an easy screw or pull a part separation point. Since every application is different we cannot place an SMA or SMB connector on the coax because we won't know the optimum position. It is probably best in most cases to just leave the long factory lead on the antenna for cost and convenience. If you wish to purchase a connector for this purpose the critical requirements for the connector are: RG174 coax, 50 ohm. Connectors can be purchased online at companies such as www.Digikey.com. You might also need a crimper that can handle RG174 size coax.

Digkey connectors and assembly instructions.
1. Digikey SMA and SMB Connectors
2. Digikey SMA Crimp Connectors
3. SMA Assembly Instructions

Frequently Asked Questions
ARSE Keyless Ignition

Does the ARSE antenna have to be inserted inside the seat or can it be located just under?
The Arse works using Radio Frequency (RF). Metal acts as a shield against RF and also distorts RF fields. Placing the antenna close to a metal plane, such as a fender or metal seat pan, will lower the transponder read range. If you were to just put it on top of the metal seat pan the RF range could be reduced as much as 85-95% by distortion. If placed under a metal seat pan the effective range would probably be zero due to the shielding effect. On most custom V-Twin applications the antenna must be inside the seat foam, just below the surface because the fenders and seat pan are usual made of steel. The antenna needs at least 2 inches of foam between itself and a metal backplane to have decent range. On some bikes this won't be possible. Oh well, too bad, uncomfortable seat = no ARSE. Fortunately the majority of bikes have ample padding. On Sport bikes and most stock Harleys, shielding and distortion are not usually a problem since the seats are plastic and the sub-frame is light and small. You could probably get away with just gluing the antenna under the seat foam of a Sport bike or stock Harley. The best way to decide is to mock up the antenna placement first and try it out. If it works, then make it permanent.

I have several bikes; can I have one ARSE keycard work for all of them?

Yes, absolutely. This will need to be done as a custom order but it does not cost any thing additional. The only trouble with this is if you sell one of your bikes. That person will now have the key to all your other bikes. You need to carefully consider this before having this done.


I put both of my ARSE keys in my wallet and now the bike won’t start, what’s up with that?

The two card key transponders are interfering with each other. When the ARSE control module on the bike activates the transponders, both transponders are transmitting at the same time causing interference. It’s analogous to trying to stick two keys in a lock at the same time. They won’t fit. In this case the ARSE card key transponders are both talking at the same time and the control module can’t decide which one to listen to. It just sounds like chatter so it ignores both cards. Just place one ARSE card key transponder in your wallet. Leave the other in a safe place in case you lose one.

What is the range of the ARSE card key transponder?

There are a lot of factors that determine the range of the ARSE. In general with 2” of foam between the antenna and any metal, you should get about a 12” dome from the center of the ARSE antenna. There two very good reasons for our short range system: Safety and Security. If we provided several feet of range, there is a possibility that a small child could be playing with the motorcycle controls while a parent has their back turned and accidentally start the engine. Or someone could quickly hop on your bike and take off on it before you had a chance to react. We created a system where the operator needs to be seated and in control of the motorcycle before it can be started. You can always lay your wallet or ARSE card key transponder on the seat and start the bike when performing maintenance, tuning or service.

If I get off my bike with my ARSE card key, will the bike shut off on it's own?

No, theARSE transponder card is only used to start the bike. The bike will stay running if you get off and walk away. As long as you do not use the kill switch to kill the motor, you will not need the card to start the bike again. Once you hit that kill switch the bike is immobilized. It can only be started once again with the correct transponder card present.

What if I lose my ARSE card key?

If you’ve lost your ARSE card key, you’ve probably lost your wallet too! In that case you’ve got bigger problems than just starting your bike. At least the ARSE has let you know to head back in the bar and find your wallet. If that’s not the case, then you can either use your spare card to start your bike or you can call BulletProof Electronics at (941) 708-3444 to have a replacement card sent overnight to you. ARSE Replacement cards are $80 retail plus shipping and handling. You’ll need to have filled out your customer registration and sent it in to BulletProof or know the serial number of your unit. Each unit has a different ID code so we’ll need some way to identify you or the bike. We will not send out ARSE replacement cards unless we can directly identify you as the owner.

ARSE – Keyless Ignition Switch
Installation and Troubleshooting Guide

Thank you for purchasing BulletProof Electronics’ ARSE (Automated Recognition System Electronics) keyless ignition switch.  It is relatively easy to install for a technician with a general understanding of motorcycle electric systems.  The most difficult part of installing this unit will be taking the seat to an upholstery shop to have the antenna installed.   The ARSE acts as a key switch would so it is wired into a harness in a manner similar to a key switch.  There are several important differences between a standard key switch and the ARSE however.  The ARSE requires the Starter Button, Kill Switch and Starter Motor Relay/Bendix to be wired to it.  Therefore you will have several additional wires that a key switch would not normally have.   

 Basic Operation of the ARSE

 The ARSE system consists of 3 components:

1. an RF card transponder which is carried in a person’s wallet or back pocket
2. the control module
3. seat antenna

To operate the ARSE, place the transponder in your wallet or back pocket.  Sit on the motorcycle so that the transponder is near the seat antenna.  Press the starter button.  This will turn on the recognition system.  The antenna will activate the transponder card in your wallet.  The transponder will reply with its unique 80 bit digital code.  The recognition system will read this code and compare it to the bikes code.  If the two codes match exactly, the bikes ignition system will be turned on and following a 3 second delay, the starter motor will be engaged.  After the 3 second delay the starter motor stays engaged as long as the starter button is pressed.  Once the bike is started, the transponder is not needed to start the bike again until the bike has been shut down with the engine kill switch.  The 3 second delay is a safety and function feature which lets the operator look for the neutral light before the starter engages, as well as letting a fuel injection system initialize and pressurize itself.

 Placement of the Seat Antenna

 The seat antenna should be situated near the back of the seat where it would be closest to the operator’s wallet or back pocket.  The antenna needs a minimum of 2” of clearance from any metal such as the seat pan and back fender.   As with any Radio Frequency device, metal can act as a shield which can limit range.  It is important to place the antenna in a manner such that it is as far from metal as possible.  On most bikes there should be sufficient room to tuck the antenna in a pocket made in the seat foam.  The seat foam pocket should be ¼” to ½” below the top of the seat.  This will ensure that the antenna is not felt when a person is seated on it.  The antenna coax should be routed through the bottom of the seat so that it is not pinched when the seat is attached.  A ½” hole drilled into the seat pan should be big enough to pass the coax through the bottom of the seat.  The coax is approximately 4ft long.  This should provide enough length so that when the seat is removed for service or access, it can be placed alongside the bike without needing to disconnect the antenna coax from the control module.  When placing the seat on the bike, make sure the coax is not pinched by the seat. On a bike with a plastic seat, we suggest mounting under the seat. Glue the antenna to the underside of the seat.  Note that placing the card dead center on the antenna for testing before installation in the seat, may not work.  Hold the card a few inches above the antenna and to one side, or wave across the antenna to test.

 Placement of the Control Module

 The control module can be placed anywhere that is convenient on the bike so long as it is not subjected to exhaust heat or extreme engine heat.  Although the control module is thermally protected, if it is subjected to extreme heat it can be damaged or its range can be decreased.  It is best hidden out of view so that the bike will have a clean appearance and provide an invisible starting mechanism.  Typical placement is done in the electrical compartment or battery box.  The unit is hermetically sealed so it is resistant to water, oil and grease.

 Troubleshooting

 Wiring the ARSE

 Figure 1

 Proper Voltages on ARSE with battery connected

Wires	Starter Button pressed	Starter Button out	Kill Button pressed	Kill Button out
Red	+12VDC	+12VDC	+12VDC	+12VDC
Black	Ground	Ground	Ground	Ground
Orange	0VDC if card not presented, +12VDC after card activation	0VDC if card not presented, +12VDC after card activation	0VDC	0VDC if card not presented, +12VDC after card activation
Gray	+12VDC after card activation	0VDC	0VDC	0VDC
White w/ Black Stripe	4.5 to 5.0VDC	4.5 to 5.0VDC	0VDC	4.5 to 5.0VDC
Black w/ White Stripe	0VDC	4.5 to 5.0VDC	4.5 to 5.0VDC	4.5 to 5.0VDC

Do not hesitate, Do NOT Wait!! Add This Truly Custom Touch Of An Arse Keyless Ignition Switch To Your Custom Motorcycle Today!!