<p>The cables you point out are newer Power Function cables and are ill-suited for 9V usage such as with the original Mindstorms kits. Technically, you could daisy-chain two of them and it would work, but that's probably not the best solution.</p>

<p>Here is a bigger illustration of the cable, courtesy <a href="http://www.philohome.com/pf/pf.htm" rel="nofollow noreferrer">Philo</a>:</p>

<p><a href="https://i.sstatic.net/PNSNr.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/PNSNr.jpg" alt="![PF extansion cable]()"></a></p>

<p>You can clearly see that only one end of the cable has a 9V connector on the bottom.</p>

<p>I would advise you to check <a href="http://www.bricklink.com/search.asp?q=Electric%2C+Wire+with+Brick+2+x+2+x+2%2F3+Pair%2C" rel="nofollow noreferrer">Bricklink</a> instead, you should find plenty of seller there, possibly in your own country.</p>

CC BY-SA 3.0
2012-02-02T05:38:50.657Z
2017-04-18T18:34:02.140Z
2017-04-18T18:34:02.140Z
Joubarc
<p>I have an old Mindstorms 1.5 <a href="http://en.wikipedia.org/wiki/Lego_Mindstorms#RCX">RCX</a>. </p>

<p>The plastic on the power cables has degraded, and they short out and don't work well.</p>

<p><a href="http://www.ebay.com.au/itm/ws/eBayISAPI.dll?ViewItem&amp;item=300653416462&amp;ssPageName=ADME%3aB%3aWNASIF%3aAU:1123#ht_949wt_907">These</a> look like they would work as replacements, but I'm not exactly sure. I contacted the seller but they didn't respond.</p>

<p>Will these work as replacement RCX power cables?</p>

<rcx>
Replacement power cable for Mindstorms RCX
Brock Henry
# Replacement power cable for Mindstorms RCX

(Asked by: username_0 on 2012-02-01)

I have an old Mindstorms 1.5 [RCX](http://en.wikipedia.org/wiki/Lego_Mindstorms#RCX).

The plastic on the power cables has degraded, and they short out and don't work well.

[These](http://www.ebay.com.au/itm/ws/eBayISAPI.dll?ViewItem&item=300653416462&ssPageName=ADME%3aB%3aWNASIF%3aAU:1123#ht_949wt_907) look like they would work as replacements, but I'm not exactly sure. I contacted the seller but they didn't respond.

Will these work as replacement RCX power cables?

**Tags:** rcx


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## 1 answers

### Answer by username_1 on 2012-02-02. Score: 8

The cables you point out are newer Power Function cables and are ill-suited for 9V usage such as with the original Mindstorms kits. Technically, you could daisy-chain two of them and it would work, but that's probably not the best solution.

Here is a bigger illustration of the cable, courtesy [Philo](http://www.philohome.com/pf/pf.htm):

[![![PF extansion cable]()](https://i.sstatic.net/PNSNr.jpg)](https://i.sstatic.net/PNSNr.jpg)

You can clearly see that only one end of the cable has a 9V connector on the bottom.

I would advise you to check [Bricklink](http://www.bricklink.com/search.asp?q=Electric%2C+Wire+with+Brick+2+x+2+x+2%2F3+Pair%2C) instead, you should find plenty of seller there, possibly in your own country.


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