 Need some help wiring up a relay to some fogs |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Jameel |
 Apr 19 2019, 06:14 PM
Post
#1
|
|
Member  Group: Members Posts: 98 Joined: 6-October 15 From: Iowa Member No.: 19,239 Region Association: None  |
Finally getting the front end of my '71 looking finished. I mounted up these Cibie and Hella lights and got them wired up today. All went well during testing, but on a drive I blew a fuse, then outright melted another one. Came home to rethink.
I have wired up the J West H4 relays on several 911's, but I have not done it on a 914. I had assumed when wiring this that the round relay in the fuse panel under the dash would be sufficient. It's not apparently!! So, couple questions. 1. I'm running four 55W halogen bulbs, and that works out to 4.58 amps per bulbs, so less than 20 amps total. The Hella bulbs came with a 30 amp relay. Is that relay beefy enough to handle the four 55W bulbs at 20A? 2. If I do wire up this relay, where do I put it? How do I handle the round relay in the fuse panel under the dash? 3. If I switch out all the bulbs for LED's, will the round fuse be all I need?  |
   |
 
|
  |
Replies
| Jameel |
Apr 19 2019, 07:38 PM
Post
#2
|
|
Member Group: Members Posts: 98 Joined: 6-October 15 From: Iowa Member No.: 19,239 Region Association: None |
I was looking closer at the fuse and whadya know, the metal is intact. What causes the ends to get roasted like this without the wire breaking?
 |
|
|
|
| windforfun |
Apr 20 2019, 11:11 AM
Post
#3
|
|
Advanced Member Group: Members Posts: 2,054 Joined: 17-December 07 From: Blackhawk, CA Member No.: 8,476 Region Association: None 
|
QUOTE(Jameel @ Apr 19 2019, 05:38 PM)  I was looking closer at the fuse and whadya know, the metal is intact. What causes the ends to get roasted like this without the wire breaking? Heat due to a voltage drop due to contact resistance. Current melts the metal, but not the plastic. |
|
|
|
Posts in this topic
Jameel Need some help wiring up a relay to some fogs Apr 19 2019, 06:14 PM
Spoke
I was looking closer at the fuse and whadya know,... Apr 20 2019, 06:31 AM Mark Henry Relay it near your fog lights you leave the existi... Apr 19 2019, 09:14 PM
Jameel
Relay it near your fog lights you leave the exist... Apr 20 2019, 05:50 AM Jameel Great info. Thanks! I have not yet taken a clo... Apr 20 2019, 10:40 AM Jameel Took a closer look at the panel. I don't have ... Apr 20 2019, 01:36 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2025 - 02:43 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.