Need wiring advice! (Air pump) - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 09-16-2014, 12:05 AM Thread Starter
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Need wiring advice! (Air pump)

I mounted my air compressor inside the jeep. I op tested it and it worked fine (a few seconds). I ran a wire from the plus on the battery and another to ground. Ran the wire to behind the seats where the pump is mounted. The pump originally was a portable type I connected directly to the battery. I cut the majority of the pump's original cable and to make the connection, I spliced a quick release connector on a short piece of the same type wire I ran from the battery. I want it to be removable. I had to do this because the wire that comes from the air pump was too large to use the with the quick connect. It worked, but I had not tested it actually filling a tire. Well when that time came, the pump did not even get a single tire aired up when I saw smoke coming from the wires. It also seemed like it was not working at full capacity. It would normally air up a 35 in 3 min.

So now I am wondering if the wire I used is too small or is it because I did not solder it inside the quick release connector. It melted the wire covering on the pump side the wire going to the battery is ok. The pump is a 12 -13.5 volt 45 amp pump. Any advice on how to fix the wiring so it will not burn would be appreciated!!!
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Regards,
Brad


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post #2 of 7 Old 09-16-2014, 04:58 AM
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Quote:
Originally Posted by Tiger3 View Post
I had to do this because the wire that comes from the air pump was too large to use the with the quick connect.
The wire was that size for a reason. Also, when you extend a wire too long you need to go UP in wire diameter, not down.

45 amps is a lot of current. My winch is 45 amps at full load and is powered through 2 aught wire.

Look at the chart in this link.
http://www.engineeringtoolbox.com/am...uge-d_730.html

If you keep the length of the wire under 15 feet, you could get away with 6 ga. or 4 ga. to be safe and allow up to 20 feet of wiring. You will need to get a quick disconnect for the appropriate wire size.

Be glad you didn't burn down your Jeep. It could have happened.

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post #3 of 7 Old 09-16-2014, 05:09 AM Thread Starter
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Quote:
Originally Posted by 14Sport View Post
The wire was that size for a reason. Also, when you extend a wire too long you need to go UP in wire diameter, not down.

45 amps is a lot of current. My winch is 45 amps at full load and is powered through 2 aught wire.

Look at the chart in this link.
http://www.engineeringtoolbox.com/am...uge-d_730.html

If you keep the length of the wire under 15 feet, you could get away with 6 ga. or 4 ga. to be safe and allow up to 20 feet of wiring. You will need to get a quick disconnect for the appropriate wire size.

Be glad you didn't burn down your Jeep. It could have happened.
Thanks! I will get larger cable before reconnecting it. I am glad I was watching it closely so I did not start a jeep fire.

Regards,
Brad


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post #4 of 7 Old 09-16-2014, 05:13 AM
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Quote:
Originally Posted by Tiger3 View Post
Thanks! I will get larger cable before reconnecting it. I am glad I was watching it closely so I did not start a jeep fire.
I'm glad as well. That would have sucked. Also make sure you add a fuse as close to the battery as possible.

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post #5 of 7 Old 09-16-2014, 11:39 AM
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I would also suggest to read the sticky at the top of this section. Good info in there.
https://www.jkowners.com/forum/showthread.php?t=94706

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post #6 of 7 Old 09-18-2014, 04:18 PM Thread Starter
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Originally Posted by AWOL View Post
I would also suggest to read the sticky at the top of this section. Good info in there.
https://www.jkowners.com/forum/showthread.php?t=94706
Very good info there. Thank you!!

Regards,
Brad


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post #7 of 7 Old 09-18-2014, 05:28 PM
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Thank Doc for doing the writeup.

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