After removing all the 50-year-old wiring, and years of add-on electrics on this Pearson Triton sailboat we completely rewire the 12 volt electrical system. Some of the parts used are listed below:
Six pieces 12" LED Light with Touch Dimming $25.00 FX-30-TD
https://store.marinebeam.com/12-or-18-led-light-with-touch-dimming/
The masthead tricolor/anchor light I used on this boat is no longer available and I now use this one from Lunasea - $202:
https://www.boemarine.com/lunasea-tri-color-anchor-strobe-led-navigation-light.html
This is the Lunasea switch - $50:
https://www.boemarine.com/lunasea-tri-anchor-flash-fixture-switch.html
Economy Series 25 - LED Deck and Navigation Light, Mast Mounted $59.95 N3-225-CMBB
https://store.marinebeam.com/economy-series-25-led-deck-and-masthead-navigation-light-mast-mounted/
Attwood Series 3500 LED Port and Starboard Navigation Lights
Six pieces Marine Outlet Receptacle 12 Volt $3.50 (amazon)
100A Mini BusBar (positive) with 5 screws Blue Seas $11 (amazon)
150A Common BusBar (negative) with 20 screws Blue Seas $17 (amazon)
Five pieces Blue Sea Systems 20A - 6 & 8 Circuit Terminal Block and jumpers for lights/fans/nmea/running lights (amazon)
Two pieces Blue Sea Systems Terminal Block 30 A, 10 Circuit, 2510 $11 plus jumpers (amazon
Two pieces 12V Battery Disconnect Cutoff Switch $8 (amazon or Harbor Freight)
Blue Sea Systems Single MRBF Terminal Fuse Block and choice of fuse size at defender.com
KRIËGER 1100 Watt 12V Power Inverter $89 (I forgot to mention that there is a small chance that you could damage certain electronics with these modified square sine wave invertors from heat build-up if used a long time. I've never had the problem but if you can afford it, the pure sine wave invertors are a better choice.)
https://www.amazon.com/dp/B00T564EIY/ref=psdc_583328_t2_B00153BH7Q?th=1
Four Duracell AGM Deep Cycle Marine and RV Battery (Group Size 31)
Sams Club $179 (2022 update: I now use lithium batteries on most boats.)
Wirefy Heat Shrink Wire Connectors
https://www.amazon.com/gp/product/B07124B886/ref=ppx_yo_dt_b_asin_title_o03_s02?ie=UTF8&psc=1
Titan Tools 11477 Ratcheting Wire Terminal Crimper
https://www.amazon.com/gp/product/B0069TRKJ0/ref=ppx_yo_dt_b_asin_title_o03_s02?ie=UTF8&psc=1
Ginsco Dual USB Charger Socket Power Outlet
https://www.amazon.com/gp/product/B01N6S2SNM/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Ancor 151510 Marine Tinned Copper Coaxial Cable RG8X
https://www.amazon.com/gp/product/B000NUX61W/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
Shakespeare PL-259-CP-G Marine Center Pin Connector
Victron Energy Battery Monitor, BMV-700 ($140 amazon)
Hawkeye by Norcross D10DX Digital Depth Sounder ($99 at leisurepro.com)
Garmin ECHOMAP Plus 74cv with Transducer $500 at thegpsstore.com
GPS Ram swing mount
(RAM-109V Marine Single Swing Arm Mount $61 at amazon)
Standard Horizon GX2200 Matrix VHF/AIS with GPS $314 at thegpsstore.com
Renogy Voyager - 20A Negative PWM Waterproof Charge Controller w/ LCD Display $49
https://www.amazon.com/Renogy-New-Voyager-Waterproof-Controller/dp/B07YXZMKD2/ref=sr_1_1
(2022 update: I now use MPPT type charge controllers for increased efficiency.)
5-Pack Round Rocker Power Switch 6A (amazon)
Four pieces Gray Plastic ABS Project Box 5.3" x 3.0" x 2.0" $3.49
https://www.jpmsupply.com/Gray-Plastic-ABS-Project-Box-5-3-x-3-0-x-2-0-p/89448.htm
Ancor Marine Grade Battery Cable Red and Black 1 AWG and Tinned Copper Lugs (amazon)
Ancor Marine Grade wire, simplex and duplex 10AWG-18AWG (amazon)