5 pin relay
Skip itA small market ($48K/yr) — this niche doesn't clear our bar today.
Returns
Great1.8%return rate — above 6% kills the launch gate
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Review moat
Good894.87avg incumbent reviews — the moat a new listing must climb
Price range
Good$5.97–$29.41cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$12.61avg listing price — sweet spot $15–$100
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Growth
Okay+8.2%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$48K$48K/yr · 50K searches
Competition
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
15 falling
Sellers
20
Top-5 brand share
79%
Open market
17%
- iRhapsody31%
- Nilight20%
- ecocstm14%
- Hamolar8%
- BFXM5%
- Ronybuy4%
- Open — no brand owns it (9 brands, 17%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
irhapsody 5 Pack 40/30 AMP 12V DC Waterproof Relay Kit with Heavy-Duty Pigtail 5-PIN SPDT Automotive Relay
iRhapsody$25.554.7★3,540 rev
4 PCS Relays 5 Pin Relay 40A Waterproof Car Relays 12V Relay Switch for Electric Cooling Fans Motor Starters Automotive Taillights
ecocstm$8.524.3★302 rev
Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack 2 Years Warranty
Nilight$12.534.6★3,431 rev
Hamolar 2 Pack 12V 40/30 Amp Car Relay DC 5 Pin SPDT and Harness - Heavy Duty 12 AWG Copper Wires Relays Kit for Automotive Truck Motorcycle Boat
Hamolar$8.244.7★586 rev
Nilight 10 Pack SPDT 5PIN Electrical Relays 12V 30/40 Amp 5-Pin Switch Relay for Automotive Car Truck Marine Boat
Nilight$12.774.5★1,346 rev
Newest
by launch date
oovmaan 5Pack 5Pin DC 12V 40A MultiPurpose Replacement Automotive Relay for AC Fan Oil Pump Light Modification
oovmaan$12.751 rev
BFXM 5 Pin Relay 12V Automotive Relay Kit with 14&16 AWG Harness SPDT 40/30 AMP Waterproof Heavy Duty Relay for Horn Starter Radiator Fan Motor
BFXM$8.0415 rev
4 PCS Relays 5 Pin Relay 40A Waterproof Car Relays 12V Relay Switch for Electric Cooling Fans Motor Starters Automotive Taillights
ecocstm$8.52302 rev
Ronybuy 5-Pin Waterproof Relay Kit 40/30 AMP 12V Relay Switch with Harness 12&16 AWG Tinned Copper Wires SPDT Automotive Relay Kit for Horns Starters Radiator Motor Fans Boats Pack of 2
Ronybuy$12.06147 rev
Weasch 2 Pack JD1914 Car Relay 12V 40A 5 Pin SPDT Automotive Switches and Starters Waterproof Relay for Boat Tractor Truck Motorcycle (2)
Weasch$5.9766 rev
Trending
90-day click momentumoovmaan 5Pack 5Pin DC 12V 40A MultiPurpose Replacement Automotive Relay for AC Fan Oil Pump Light Modification
oovmaan$12.755.0★
BFXM 5 Pin Relay 12V Automotive Relay Kit with 14&16 AWG Harness SPDT 40/30 AMP Waterproof Heavy Duty Relay for Horn Starter Radiator Fan Motor
BFXM$8.044.3★
BOSCH 0986332022 Changeover Mini Relay - 5 Pins 12V 40/60A - Single
Bosch$15.494.5★
Nilight SPST Multi Purpose Relay 12V 5 Prong Fuel Pump Relay 5Pack 35A/20A Ultra Micro ISO Automotive Replacement Accessory Power Relays for Automotive Cars Truck tractor Marine Boat 2 Years Warranty
Nilight$15.734.6★
4 PCS Relays 5 Pin Relay 40A Waterproof Car Relays 12V Relay Switch for Electric Cooling Fans Motor Starters Automotive Taillights
ecocstm$8.524.3★
Demand & seasonality
Weekly Amazon search volume, last 55 weeks — +8.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.2×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“well worth the price”
“Great product, exactly as described”
“Worked as it should”
“functions great”
“fit perfect”
“At first it was easy to hook up”
“Easy to use, effective”
“they feel much more substantial than the standard non-waterproof versions”
“Weather Proof, easy to install Relay for my Box Truck Air Horn”
“The compact design makes them easy to mount”
What buyers complain about
“Does not fit”
“Poor quality”
“Is not compatible with 08 Corolla”
“Didn't work for me”
“Falsely advertised”
“Intermittent working, loud noises, and they are not dependable”
“it would come apart”
“No Way These Are 80 Amp Relays”
“the colors on the harness aren't in the standard locations”
“Bad documentation”