Question 1

Have to word as question-who here does not know that arb uses 1/8 in bsp fitting?

Accepted Answer

Why are you asking if you know already?

Question 2

Can I use it as a switch for an air horn?

Accepted Answer

Depending on the compressor and air horn you have, the answer is yes.  The Solenoid opens and closes a valve on the compressor. Some compressors only have one air port, so you may have to add a manifold kit (https://www.amazon.com/ARB-171503-Air-Compressor-Manifold/dp/B00CJ1VKE8/ref=pd_sbs_263_10?_encoding=UTF8&pd_rd_i=B00CJ1VKE8&pd_rd_r=M7GEG81XS0YJED75R9TJ&pd_rd_w=ODhKx&pd_rd_wg=cLI4Y&psc=1&refRID=M7GEG81XS0YJED75R9TJ) to give you an extra air port.  You'll also need an extra rocker switch to run the air horn.  You need one switch to turn on and off the compressor and additional switches for lockers, air hoses, air horns, etc.  A sPOD is a great way to wire up multiple switches.  ARB also makes kits that consist of air line and air valves  https://www.amazon.com/ARB-170301-Engine-Intake-Adapter/dp/B005Q4WUDK/ref=pd_bxgy_263_3?_encoding=UTF8&pd_rd_i=B005Q4WUDK&pd_rd_r=P6ZJYARM6CJ8KC1HGD1F&pd_rd_w=ZfSDu&pd_rd_wg=h0CwZ&psc=1&refRID=P6ZJYARM6CJ8KC1HGD1F      https://www.amazon.com/ARB-170201-Air-Fitting-Straight/dp/B00042KQZS/ref=pd_bxgy_263_2?_encoding=UTF8&pd_rd_i=B00042KQZS&pd_rd_r=61993K2K5T7KSJNB7YDY&pd_rd_w=I73KA&pd_rd_wg=uxV0E&psc=1&refRID=61993K2K5T7KSJNB7YDY  As long as you have the right parts, it's a pretty straight forward installation.  Just make sure not to run the air line next to anything sharp or hot enough to melt it.

Question 3

What size fitting is it?

Accepted Answer

ARB uses an 1/8 inch BSP fitting - just called their tech line.  Amazon sells BSP to NPT, I went with Viair who sells 2 for $11.

Question 4

How did you install the part. the threaded end inside the solenoid doesnt wwnt to turn and the rntite unit cnanot rotate as it hits the arb housing.

Accepted Answer

Not sure what to tell you. The threaded part DOES turn inside the main housing. You should be able to hold the housing still and put a wrench on the metal threaded part and tighten it into the ARB compressor.

ASIN	B00042JHT4
Auto Part Position	Front Left Outer
Automotive Fit Type	Universal Fit
Brand Name	ARB
Colour	Silver/Metallic Gray
Compatible with Vehicle Type	All-Terrain-Vehicles
Country of Origin	USA
Customer Reviews	4.8 4.8 out of 5 stars (124)
Exterior Finish	Aluminium
Item Weight	109 g
Manufacturer	ARB
Manufacturer Part Number	180103
Material Type	Metal
Model	180103
Number of Items	1
OEM Equivalent Part Number	180103
UPC	698231383346

ARB 180103 Aluminum Solenoid 12VDC 1/8" This is ARB's official replacement 12v electric Air Solenoid.

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