 Bringing Power to Electrical, Testing Electrical System Prior to Engine Installation |
|
|
|
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. |
|
|
| Highland |
 Oct 18 2019, 05:08 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California  |
If I connect the 12V battery (+) to the 2 red wires from the main wiring harness and the battery (-) to the chassis ground, will the electrical system power up when the ignition key is in the ON position?
The main harness is plugged into the relay board. Neither the alternator, ignition or injection harness are plugged into the relay board, but all the round relays are in place. By electrical system I'm referring primarily to windshield wipers, headlights, and lights. I want to make sure they work before installing the fuel tank and engine. |
   |
 
|
  |
Replies
| Highland |
Oct 20 2019, 01:44 PM
Post
#2
|
|
Senior Member Group: Members Posts: 513 Joined: 8-August 11 From: San Diego, CA Member No.: 13,418 Region Association: Southern California |
Only the main harness is plugged into the relay board. No alternator, ignition, or FI harness.
Do those others need to be connected? |
|
|
|
| lierofox |
Oct 23 2019, 03:16 PM
Post
#3
|
|
Member Group: Members Posts: 256 Joined: 23-June 15 From: Paso Robles, CA Member No.: 18,880 Region Association: Southern California 
|
QUOTE(Highland @ Oct 20 2019, 12:44 PM)  Only the main harness is plugged into the relay board. No alternator, ignition, or FI harness. Do those others need to be connected? They shouldn't. The relay board is basically just responsible for the FI computer, reverse lights, charging system, heater blower, fuel pump, and starter circuit. If you're just testing the main blower motor, wipers and lights, etc. those are all powered by the wires going from the battery to the front fuse panel and the ignition switch, you don't even need to have the engine relay board plugged in at all. |
|
|
|
Posts in this topic
Highland Bringing Power to Electrical Oct 18 2019, 05:08 PM
bdstone914 It should. The power to the engine goes thru the r... Oct 18 2019, 05:49 PM lierofox Looking over the wiring diagrams that I have, of t... Oct 18 2019, 10:29 PM Tdskip Relay board issues aren’t unheard of. Testing al... Oct 19 2019, 09:37 AM barefoot Just for peace of mind, I added fuzes to the 4 un-... Oct 19 2019, 11:35 AM dr914@autoatlanta.com yes
If I connect the 12V battery (+) to the 2 r... Oct 19 2019, 12:08 PM Highland Need more help. So I think I may have made a mista... Oct 19 2019, 08:58 PM lierofox That sounds like some other type of short... as fa... Oct 19 2019, 11:28 PM IronHillRestorations It's also possible to plug the engine harness ... Oct 20 2019, 11:12 AM
Highland Ran into a few problems testing the front electric... Oct 24 2019, 03:23 PM JeffBowlsby What EXACTLY was smoking? Smoke is usually from h... Oct 24 2019, 03:30 PM theer on 1) check the fuse(s) for corrosion where it sit... Oct 24 2019, 03:33 PM
Highland My ignition switch smoked when I tried it without ... Oct 24 2019, 03:55 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 19th May 2024 - 02:07 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.