Attwood 3540 ユーザーズマニュアル

Figure 2

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®

SAVE THESE  INSTRUCTIONS
Form Number 69425  Rev. A 

07-04

1NM Sidelights (Series 3520 and 3530)
For boats up to 12 meters / 39.4 feet. Meets USCG CFR 183.810, 
ABYC A-16 requirements and all applicable standards as tested by 
Imanna Laboratories, on 2/22/2007. 1 nautical mile visibility. 

2NM Bi-Color Combination Bow Light 
For boats up to 20 meters / 65.6 feet. Meets USCG CFR 183.810, 
ABYC A-16 requirements and all applicable standards as tested by 
Imanna Laboratories, on 3/6/2007. 2 nautical mile visibility.

2NM Sidelights 
For boats up to 50 meters / 164 feet. Meets USCG CFR 183.810, 
ABYC A-16 requirements and all applicable standards as tested by 
Imanna Laboratories, on 3/6/2007. 2 nautical mile visibility.

REQUIRED FOR INSTALLATION
• Phillips screwdriver
•  Drill and bits: 3/8" for wire clearance hole
•  Pilot drill for mounting screws
•  Two #10 pan head stainless steel screws (not included)

LOCATION
1. Position light(s) on a surface of the gunwale or deck that is horizontal 

(within +/-5 degrees). 

2. When installing bicolor combination light, place it on the centerline 

of the boat at the bow (See Figure 1a). 

  When installing sidelight pairs, place lights with the red lens on 

the port (left) and green lens on the starboard (right) as you stand 
onboard facing bow of the boat. Lights must be parallel to centerline 
of the boat (See Figure 1b).

3. Make sure there are no obstructions at the front or side (such as 

rail stanchions, chocks, anchors, cleats, etc.) within the light’s arc 
of visibility (112.5 degrees each side).

4.  Measure and mark location of wire clearance hole. At the marked 

location(s), make a mark for a 3/8” hole. (See Figure 2).
•  If installing a bicolor light, location must be on the boat centerline. 

 • 

 

If installing a sidelight pair, both mounting holes must be the same 
distance from the bow. 

DRILLING INSTRUCTIONS
1. Remove the cover and housing by removing the Phillips-head 

screw in the cover and lifting off. (See Figure 2).

2. Assemble gasket to base.

Red

(Port)

Green
(Starboard)

Red

(Port)

Green
(Starboard)

Figure 1b

Figure 1a

Cover Screw

Stainless Steel
Lens Cover

Housing

Mounting Screw

Base

Base Tabs

Gasket

Butt-Joint
Connectors

3/8" Hole, Aligned
with Boat Centerline 

Vertical Tab, Aligned
with Boat Centerline 

Telltale Post

3. Align hole beneath light base with the position you’ve marked for 

the wire clearance hole. Set the lamp toward the bow and align 
vertical tab with the boat centerline.

4. Use the light base as a template to mark locations for the mounting 

screw pilot holes (use 2 #10 stainless steel screws).

CAUTION  
Position holes carefully on aluminum boats so that wires do not 
contact the hull.

5. Drill wire clearance hole and pilot holes for the mounting screws.

MOUNTING INSTRUCTIONS
1. Be sure gasket is aligned with the base.
2. Insert two #10 stainless steel mounting screws through base and 

fasten base to the deck. Tighten until gasket seals to the deck.

NOTE
If area below the light will not be reachable after installation, attach 
a suitable length of 16-gauge red- and black-colored NON-POWERED 
wire that can be routed to an accessible area. Make connections 
according to WIRING INSTRUCTIONS below. 

3. Feed the positive (red or gray) and negative (black) wires through 

the hole in base and lead them below deck. 

4. Lower the housing onto the base. Seat the housing so the base 

tabs fi t in the housing grooves and the base screw mount aligns 
with the housing screw hole. 

5. Replace the stainless steel cover, then fasten it with the 

Phillips-head screw. 

WIRING INSTRUCTIONS
The power supply must be 12-volt DC ONLY. Use crimp-type 
marine-grade connectors with suitable waterproof insulation. 
Protect all connections with suitable materials.

NOTE
Failure to make proper connections and fuse the light properly will 
void the product warranty.