How many millamps does the coil draw at 12 volt or what is the ohm of the coil ?

The trigger uses a load of ~150 milliamp while the coil has a max resistance of 100 milliohm. Hope this helps.

Do these have a built in diode?

Not for the led that is determined by the wattage of the bulb a 12 volt led 1156 should have the diode built in it.

Can you leave the relay energized for long periods of time? I want to connect to the 'load' circuit on a solar panel controller.

The load would have a big affect on how long it can run. I have LED running lights wired in on my motorcycle which are on all the time so they can be lit for many hours at a time. So far I have not had any issues with these relays. A low load through the contact would allow it to be energized forever theoretically.

What gauge is the wires I need 12 gauge but I have found normally they are only 14 gauge

On the set just received, three wires are 14 GA. (power and N.O. and N.C. wires). The other two wires (coil trigger) are 18 GA. rather than 16 GA. as indicated in one of the photographs........... also wish vendor supplied operation cycle rating, I know the rating is higher with a 30 amp load vs. a 40 amp load, but are we talking about 200,000 total cycles @30 amps or something drastically LESS????

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True MODS 6 Pack Bosch Style 5-Pin 12V Relay Kit [Interlocking Harness Socket Holder] [14 AWG Hot Wires] [SPDT] [30/40 Amp] 12 Volt Automotive Relays for Auto Fan Cars

Product ID: 32902112

Details

Connector Type
Quick Connect
Contact Material
Silver Plated
Current Rating
30 Amps
Mounting Type
Screw Mount"

⚡40A max switching power

🔗Interlocking socket design

🧵Heavy-duty 14AWG wiring

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HK$231

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Description

⚙️ Upgrade your ride’s wiring game with pro-grade Bosch-style relays!

BUILT TO LAST - Heavy-duty 14AWG wires ensure durability and reliable current flow.
COLOR CODED CLARITY - Pre-wired pigtails with clear color coding speed up troubleshooting and upgrades.
PLUG PLAY SIMPLICITY - Standard Bosch 5-pin design fits existing relay boxes for quick installs.
POWER THROUGH ANYTHING - Handles up to 40 amps for high-demand automotive and marine projects.
SNAP STACK ORGANIZATION - Interlocking relay sockets keep your wiring neat and scalable.

This 6-pack of Bosch style 12V 5-pin SPDT automotive relays features a robust 40A/30A switching capacity, heavy-duty 14AWG pre-wired pigtails, and an interlocking socket harness for streamlined cable management. Designed for easy installation and versatile use in automotive, marine, and off-road electrical projects, these relays deliver reliable performance and professional-grade durability.

Specifications

ASIN	B01KVZ2MU4
Best Sellers Rank	#47,172 in Automotive ( See Top 100 in Automotive ) #22 in Automotive Replacement Starter Relays
Brand Name	ONLINE LED STORE
Coil Voltage	12 Volts
Connector Type	Quick Connect
Contact Current Rating	40 Amps
Contact Material	Silver Plated Copper
Contact Type	['Normally Open', 'Normally Closed'] Cannot Be the Correct Value for 'Contact.type'. a Single Such as Open' Or Closed' Should Provided Based on Desired Contact Type.
Current Rating	30 Amps
Customer Reviews	4.7 4.7 out of 5 stars (1,870)
Item Weight	0.94 Pounds
Manufacturer	ONLINE LED STORE
Maximum Switching Current	40 Amps
Model	13
Mounting Type	Screw Mount" or "Surface Mount
Operation Mode	Auto,Manual
Part Number	PSZACCEPS175R
UPC	816165023088

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TrustScore 4.5 | 7,300+ reviews

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HK$231

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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