X-ALT INSTALLATION INSTRUCTIONS

The X-ALT should be installed using the integral brackets provided in an environment where it is not subjected to water spray, excessive temperature changes or abnormal vibration. Do not attempt installation of the X-ALT unless you have basic auto-electrical knowledge, otherwise a suitably qualified auto-electrician should be employed. Please read fitting instructions carefully before starting installation. It is advisable to check that batteries are in good condition. Make sure that cables connecting the alternator output to the batteries are of sufficient diameter to carry the alternator current when charging at full output. This will help reduce voltage drop and power losses. This is of special importance if the alternator is being upgraded to a larger size. Check that any split charging systems (e.g. relays, diodes, X-SPLIT etc.) are of the correct current rating. The X-ALT cannot be fitted to alternators with external electro-mechanical regulators, as used on engines fitted with a dynamo.

WIRING DETAILS

• Pink 16/02 :- +12 (+24) volt Power Feed via ignition switch. This provides the power to the BUCCANEER when the ignition is switched on and the engine is started.
• Red 16/02 :- Sense from selected battery. Depending on the installation this can either be to the single battery or to the domestic/auxiliary battery dual battery installation. Control of the alternator output voltage is determined by the voltage sensed at this point.
• Grey 16/02 :- Sense wire from alternator. This should be wired to the B+ output of the alternator as it is used as part of the Alarm Monitoring Process. (Wiring to any other termination will provide incorrect information to the BUCCANEER as to the safe state of operation)
• Green/Yellow 16/02 :- 0v / earth, this should be wired to the earth of the alternator, battery negative or to a common earth point.
• White Tri rated :- Control wire for alternator. The method of connection depends on whether the alternator is type A or B; see section 2.
• Black Tri rated :- Control wire for alternator. This also depends on whether the alternator is type A or B. See section 2 for further information.

INSTALLATION SKIPPER & CAPTAIN LOOM 1

WIRING DETAILS

• Pink 16/02 :- +12 (+24) volt Power Feed via ignition switch. This provides the power to the SKIPPER & CAPTAIN [loom 1 = alternator 1] when the ignition is switched on and the engine is started.
• Red 16/02 :- Sense from selected battery. We recommend that that this is connected to the engine battery.
• Green 16/02:- Sense from selected battery auxiliary battery's. We recommend that this is the main domestic battery.
• Yellow:- For Skipper/3 & CAPTAIN models there is an additional Yellow 16/02. Sense from the second auxiliary  battery.

N.B Control of the alternator output voltage is determined by the voltage sensed at these points depending on the selected battery.
• Grey 16/02 :- Sense wire from alternator. This should be wired to the B+ output of the alternator and on CAPTAIN installations alternator 1 as it is used as part of the Alarm Monitoring Process. (Wiring to any other termination will provide incorrect information to the SKIPPER & CAPTAIN [loom 1 = alternator 1] as to the safe state of  operation)
• Green/Yellow 16/02 :- 0v/ earth, this should be wired to the earth of the alternator and for CAPTAIN installations alternator 1 or battery negative or to a common earth point.
• White Tri rated :- Control wire for alternator. The method of connection depends on whether the alternator is type A or B; see section 2.
• Black Tri rated :- Control wire for alternator. This also depends on whether the alternator is type A or B. See section 2 for further information.

WIRING DETAILS FOR CAPTAIN LOOM 2

• Pink 16/02 :- +12 (+24) volt Power Feed via ignition switch. This provides the power to the CAPTAIN [loom 2 = alternator 2] when the ignition is switched on and the engine is started.
• Grey 16/02 :- Sense wire from alternator. This should be wired to the B+ output of the alternator as it is used as part of the Alarm Monitoring Process. (Wiring to any other termination will provide incorrect information to the CAPTAIN [loom 2 = alternator 2] as to the safe state of  operation)
• Green/Yellow 16/02 :- 0v / earth, this should be wired to the earth of the alternator 2, battery negative or to a common earth point.
• White Tri rated :- Control wire for alternator 2. The method of connection depends on whether the alternator is type A or B; see section 2.
• Black Tri rated :- Control wire for alternator 2. This also depends on whether the alternator is type A or B. See section 2 for further information.

When fitting an X-ALT to an alternator access to the brush / regulator module will be required. On alternators such as old style Lucas,  Bosch or Valeo alternators this can be accomplished by simply removing the brush / regulator module, on other models such as Hitachi, Vetus or Mitsubushi it will require the alternator to be removed from the engine for ease of modification.
Once you have gained access to the brush/regulator module attach a wire to each brush, this wire should be minimum 24/02 (0.75 mm Tri rated) or a short length of the X-ALT white and black control wires. Either refit or re-assemble the alternator bringing the two control wires to the outside of the alternator as appropriate.
To measure the resistance's as referred to below a digital multi meter capable of measuring low resistance's is preferred.

Determining the type of alternator control configuration.

The basic difference between positive and negative controlled alternators is where the regulator is installed with respect to the rotor. On positive controlled alternators the regulator is connected between the energisation feed and the rotor with one side of the rotor being connected directly to earth. The negative controlled alternator has the regulator connected between the rotor and earth with one side of the rotor being connected directly to the energisation feed.

Measure the resistance between each wire and earth or B- for insulated return alternators. If a short circuit is measured between any one brush it indicates that it is a positive controlled alternator (this is assuming that any regulator fitted is not short circuit which could provide false information). If a high resistance is measured it will be a negative controlled alternator.

Positive controlled alternators

Measure the resistance between each brush and earth, one brush will show a short circuit, 0 ohms, the other will show a resistance of 4 - 12 ohms, connect the X-ALT black control wire to the (positive) brush which indicates the resistance reading. If the alternator has a terminal marked, D+ or 61 connect the X-ALT white control wire to this terminal. If these terminals do not exist connect the white wire to a live ignition feed, this must not be permanently powered when the ignition is switched off, this can be the same connection where the electronics supply wire "pink" is connected. If the alternator does not have an internal regulator or the existing regulator is being removed and control of the alternator is relying on the X-ALT control unit, a Amp 400 volt diode must be wired across the brushes, with the Cathode (the lead with the identification band) connected to the brush with the black control wire. This diode is not necessary if the control unit is wired in parallel with the alternator's existing regulator.
Positive controlled alternators are mainly American origin i.e. Balmar, Powerline, Ample Power though early Bosch and some Valeo alternators were also of this type.

Negative controlled alternators.

Measure between each brush and the terminals marked D+ or 61 or if these terminals do not exist B+. In one instance a short circuit will be measured, in the second instance a resistance 4 - 12 ohms should be detected, on the (negative) brush where the resistance is measured connect the X-ALT white control wire, the X-ALT black control wire should be wired to the alternator's earth or B-. In all instances the wire not used should be removed or insulated to stop it shorting out. If the alternator does not have an internal regulator or the existing regulator is being removed and control of the alternator will rely on the X-ALT; a 3 Amp 400 volt diode must be wired across the brushes with the Cathode (the lead with the identification band) connected to the brush which does not have the white wire attached.

Method 2

This method requires the alternator to be re-installed on the engine with all cables and drive belts attached.

• Do not allow cables the additional cables to short out to each other or to any other point.
• Start engine and run at a fast tick over.
• With a multi meter, set on DC volts, connect multi meter negative lead (-) to alternator B- terminal (chassis/ground).
• Then with the multi meter positive lead (+), measure the voltage on each cable in turn.
• The two types of alternators will show the following readings.
• A type 'A' will show :- one cable will give a constant 14v (28v) and the other cable will show a varying voltage higher than 14v (28v). The cable with the constant voltage will be cable 1 (negative brush), discard the or insulate the other cable (it is not used). Then follow instructions in section 3 for type 'A'.
• A type 'B' will show :-  one cable will give a constant 14 volts (28v) and the other cable 0 volts. The cable which reads the constant 14 volts will be cable 1 (positive brush), discard or insulate the other cable (it is not used). Then follow the instructions in section 3 for type 'B'.

SECTION 3

If type A connect as follows: Connect X-ALT White to cable 1 (which is normally called the  negative brush). Connect X-ALT Black to alternator B- terminal (battery negative/ground).

If type B connect as follows: Connect X-ALT White to alternator D+ (61) terminal (exciter diodes).
Connect X-ALT Black to cable 1.  positive brush.
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