Steps to install underwater lights:
Essentially you are making a hole in your boat below the water line, so we first suggest professionally installed. However, if you are relentless in wanting to do everything yourself then here are the steps. Installing on transom:
- Measure and mark the tentative positions for each of the lights (we want to be at least 8 inches below the water line).
- Measure the locations position from reference points that could be located inside the hull to confirm clearance. Then check these reference point locations in the Bilge to ensure the required holes would clear stringers and vital items mounted on the transom.
- Back off the boat final measurements to laterally locate the lights were made and marked.
- Tape the supply drilling templates in position. When drilling the mounting screw holes, extra care is taken to size correctly for the soft bronze screws.
- Once the correct size is identified, Drill all mounting holes and pilot holes for wiring, then the 1/2 inch center holes for the wiring.
- Remove template and use a 5200 sealant for below the water line application, is applied to the mounting hole and the wiring hole. Make sure you use a generous amount of sealant. Also use a good amount of sealant on the backside of the light as well.
- Feed the wiring into the transom and the light is pressed into place. Tighten the mounting screws down and make sure the sealant is evenly squeezed out to ensure a watertight bond.
- Inside the bilge, first slide the rubber strain relief onto the wire and then apply marine sealant to the tips of the screws and the wiring hole and press the strain relief into place
- So the point here is to mount the terminal blocker or busbar in a central dry location where all three lights could be wired into it
- strip the positive and negative wires from each light and apply ring terminals by crimping and shrink tubing heated.
- Secure the negative and positive wires to the busbar
- Then prep the power supply with the ring terminals and shrink tubing as well
- Once complete the negative and positive wires get secured to the bus and make sure all wiring is cleaned up and secured before leaving the bilge area. If you have to, just use zip ties
- Once you run your power wires and you are ready to mount switch plates to the wall, first mark out and cut out a hole to hold an electrical box to hold the basic switch. Strip the positive leads from the panel and busbar. Ring terminals crimped on , and secure the switch plates. The ends of the positive and negative wires are stripped for ring terminals
- Create a jumper wire to run from the fuse black to the spare breaker.
- The positive wire to the switch and the jumper wire were connected to the fuse block , then insert the correct fuse. Make sure to get a block for multi fused circuits so you can add more LED lights over time.
- Finally, connect the positive to the breaker and secure the negative to the negative bus bar and you wait to launch to see if you did it right!
This should not take you more than 1 day to install. In fact it should take you about 4-5 hours.
Below are reviews based on 4 factors: Quality, Price, Use and Ease
The reason we added this Nilight LED Light Bar, besides the fact that it is boat mountable (does not come with a wire loom so you will need one unless you have an S Pod ) . There are 261 LED lights on this bad boy. At 1 watt each. The optics are completely different then some of the other LED's on the market. 150 degree flood on the front and its curved so its gonna throw tons of light on the edges. It has a very unique LED Spotlight with 32 LED's on each spotlight and huge cup of lens. The lens is sealed really well. It comes with flat mounts so it can fit snug and any flat parts on deck.
Positives: The light is well built and the seal on the lens will keeep water out, the light output is ridiculous so you will be able to see far into the sea at night
Bad news: The fit & finish/mounting on the light and bracket can be tighter, and the noise can be ridiculous after a certain speed so this is highly recommended for sailing . Overall this is very strong light to mount on your boat and you will love the vibrancy of the light.
Overall Rating: 4.2/5
Overall Rating: 4.2/5
These spotlights have an IP rating of 6+7, which means you will not have dust intrustion and you can under water up to 3 ft for an hour! This is a stamped topped cast base 3-16 heavy duty with excellent quality.
How to mount: run the power to the base itself then get a phone cord rg-11 (get at any home store) . It comes with 15ft but if you need more you can get more. It will plug and unplug The joystick can be mountable to any station you may have to run a distance (how far you want it to go fore and aft) its got 55 degrees verticle transfer and 350 degrees around. The remote is very useful so do not skimp on a remote. At 72,000 Candlepower you are getting great visibility with your spot beam and for flood it is about 30,000. This takes a 12 V battery, dual station option and is 316 stainless via base and 304 via head.
Improvements: You may have issues with the pins inserted into the connectors (holes are too small for pass through and when you pull the pins they may not snap back . Easy fix though. You will need to drill 2 2.5” holes instead of the 1.5 ” they instruct you to makingAlso we wish you were able to mount this upside down but because of water ingress it is probably not the best idea. Its’s possible but not recommended.
Conclusion: These do a really good job on boats 20ft or larger and they do well spotting buoys. Very powerful and very good looking.
Overall Rating: 4.3/5
This light was really well made. There are tons of Jabsco search lights but we use the tried and true 135sl. We love the construct of this light as noncorrosive materials were used in the production of the 135so. The light itself is a halogen beam, which is sealed. The remote control is wonderful and you are able to . You also have a clutch mechanism that prevents motor damage when you run limit stops. The replacement bulbs are really easy to find. Here is a link for cable extensions visit this link. You really can't go wrong with this light. It rotates North South East and West. (Some Jabsco's rotate 8 ways Northeast, northwest, southeast and southwest. If you want the 8 way chrome plated 7 inch light click here. We love Jabsco and we love what they have done for years now.
Some troubleshooting tips when using this light: you will notice when taking this light apart and you focus your attention on the left and right motor, the wires are both negative and positive for polarity to enable the light to rotate left to right. When looking at the tension spring, if you accidentally forced the light left or right and after that the light gets hung up in one position and you have to nudge it to get it to go forward, then you will probably have teeth gear issues and will have to replace the lower side of the unit. To pop off the top housing assembly unscrew the 4 screws over the body of the unit.
The up down motor have both negative and positive charges to reverse the polarity so that the light moves up and and down . The water shield was made specifically so that water could never get into the motors. The bronze gear assembly is what moves the housing up and down. The light itself is not polarity sensitive. The light powers the the white wires in the back. Remove the 4 screws on the front bezel, take the plastic housing off and replace the light.
Conclusion: If you are looking for top notch spotlight equipment, the 135sl by Jabsco is really unbeatable with price in mind. If you want to get a bit of an upgrade on performance and look the chrome 7 inch 8 way movement lights are our choice.
Overall Rating: 4.5/5
One of the more popular options being installed on all kinds of boats are underwater lights. However, we feel like these also work well with sailboats. Installing 2-3 3 across the transom will really illuminate the boat near the back and through the water for visual help and aesthetics. If you have a day sailor 10ft or bigger we recommend just 2 of these. You won’t need 3 across the transom unless you start getting into the 20-25ft boats.
This Lumitec SeaBlazex is one of the leaders in underwater lighting. The lights emit up to 4000 Lumens 12-24V. The housing is marine grade bronze alloy and this unit in particular comes in 4 colors along with strobe and cross fade modes. The through holes are 1/2″ on these. We found these to be really well made, and you can tell once you see them right out of the box that you are dealing with quality. We’ve actually installed 2 of these on our Mcgregor near the steps of the hull and several feet away from the transom. The idea was that we wanted them to be way lower in the water and less effected by the engines. Great for fish watching and fun!
We found that the larger (in lumens) the better they work . Do not waste your time in buying separate smaller lights. You will not be as happy and they will not work as well. The great thing about LED is that you can run 10 of the lights on one circuit and you will be fine. LED lights consume very little power. We love these SeaBlazeX underwater lights for the fun factor as well as for the light aid for fishing.
Improvements: We found that after 1 year of use the cones of the light start to diminish but we think it has to do a little with where we installed them. The wiring is not complex ( only an on-off switch)