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Proper Fuse Protection & Relays. New Trike Wiring

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=147452
Printed Date: March 29, 2024 at 4:37 AM


Topic: Proper Fuse Protection & Relays. New Trike Wiring

Posted By: deadboltdon
Subject: Proper Fuse Protection & Relays. New Trike Wiring
Date Posted: September 09, 2022 at 6:13 PM

Hello, I am preparing to do a rewire on a VW Trike I have been working on. The existing wiring the previous owner/builder did gets hot when the headlight is on and there are hot leads going into one side of a switch (horn for example) and ground on the other side. There is no horn installed and that is another reason I will just rewire it anyway.
I will be installing a fuse & relay box. My main question is can the relay pin 30 get power, from say a 10A fuse. To output on pin 87/87a While also powering the 12v+ to the switch and then out to pin 85? I know the switch in/out will never pop a fuse by overpowering but rather for short out protection. (If something happened at the handle bar switch for instance). Would it pop the 10A fuse if it shorted to ground? In the process killing power to the relay as well?
I will be using the ignition switch to give power to both a ACC and Constant power distribution bar. Each fuse would get power from the ACC or constant bar respectively.    
I hope that make sense.. I have been overthinking it and want to get it right this time around.



Replies:

Posted By: deadboltdon
Date Posted: September 09, 2022 at 6:16 PM
I still need to get the body off so I can make sense of what is there, but I think the headlight is run through the handlebar controls. The wire on these is a little thin, maybe 16/18ga. So that could explain the hot wires. Or could be worse..





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