Electric switches that employ electromagnetism to transform minor electrical impulses into immense currents are relays. When electrical inputs activate electromagnets, they either establish or break existing circuits.
A relay harness links HID lighting system to the boat's battery directly. It permits the lights to be powered by batteries rather than the vehicle's set-up. Relays effectively operate as a switch or an amplifier for the electric circuit by exploiting weak inputs to power higher currents. The advantage of adding a relay harness is that it can help manage the flow of electricity to your HID headlights.
Key Features:
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With this high-quality universal 2-wire tilt harness and relay assembly, you can keep your inboard engine tip-top form.
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Attributes to guarantee simplicity of use and longevity
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Simple to set up
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Armature made of high-temperature epoxy
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For appropriate applications, heavy-duty valves
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It includes wire harnesses and relays.
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Trim/Tilt has 40 amps.
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Included are two replaceable relays, a mounting box, a fuse, and a harness
 
Specifications:
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Brand: CDI Electronics
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SKU: 852-9820
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UPC: 736983856500
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Weight: 0.50 lbs
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Volt: 12
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Amp: 40
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Manufacturer Part Number (MPN): 852-9820
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Replaces Products: 667-8529820, 736983856500
 
40 amp for Trim/Tilt. Includes: 2 Replaceable Relays, Mounting Box, Fuse & Harness
This product replaces:
- 667-8529820, 736983856500