Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
> Help on Electrical Gremlins
kenshapiro2002
post Jan 28 2026, 06:28 PM
Post #1


Senior Member
***

Group: Members
Posts: 1,482
Joined: 23-July 09
From: Bawlmer, MD
Member No.: 10,598
Region Association: MidAtlantic Region



Some kind of crossover between high beams and turn signals. First, everything works… except the indicators. Here’s what happens… use the left turn signal and the left side green arrow on the dash flashes as it should. Use the right side turn signal and the LEFT side green arrow flashes for that one too. Turning on the high beams makes the right side green arrow light up. Seems pretty telling but I’m lost when it comes to electrics. Simply a plug and play issue? Wires simply hooked up to the wrong bulbs?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
76-914
post Jan 28 2026, 09:32 PM
Post #2


Repeat Offender & Resident Subaru Antagonist
**********

Group: Members
Posts: 13,846
Joined: 23-January 09
From: Temecula, CA
Member No.: 9,964
Region Association: Southern California



Ken, Electronics are most folks hang up. But you can handle this. I'm assuming you've a 914 manual by one of the 2 aftermarket authors. If not get one and we'll go from there. Is this your conversion or the Porsche 6? What I'd like to identify 1st is which harness are you using. Does it match the model year. Was it an original 6. Sorry, I haven't followed enough of your posts to know fore sure. Items such as hazard, turn, brake, stop lights, running lights, etc. Should be pretty much the same (and I stand corrected if needed) between the 4 & 6. Also @DR914 , little things like an incorrectly installed light bulb (1034 vs 1176) etc can cause havoc. If you don't have I'd suggest you get the Tips & Tricks tutored by Dr 914. So beginning from the start............you have 19?? 914. Was it an original 6 or after market? Reading the electrical schematic for 70-74 years is what most people are used to seeing and quite easily taught. The 75-76 models employ an electrical Flow Chart but both are easily interpreted. (IMG:style_emoticons/default/beerchug.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Spoke
post Jan 28 2026, 10:02 PM
Post #3


Jerry
*****

Group: Members
Posts: 7,325
Joined: 29-October 04
From: Allentown, PA
Member No.: 3,031
Region Association: None



That is bizarre behavior. Was this all working correctly and just started? Or was there work done?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
kenshapiro2002
post Jan 28 2026, 10:17 PM
Post #4


Senior Member
***

Group: Members
Posts: 1,482
Joined: 23-July 09
From: Bawlmer, MD
Member No.: 10,598
Region Association: MidAtlantic Region



QUOTE(Spoke @ Jan 28 2026, 11:02 PM) *

That is bizarre behavior. Was this all working correctly and just started? Or was there work done?


Took possession of the car a few months ago so it’s been like this since I got it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
kenshapiro2002
post Jan 28 2026, 10:21 PM
Post #5


Senior Member
***

Group: Members
Posts: 1,482
Joined: 23-July 09
From: Bawlmer, MD
Member No.: 10,598
Region Association: MidAtlantic Region



QUOTE(76-914 @ Jan 28 2026, 10:32 PM) *

Ken, Electronics are most folks hang up. But you can handle this. I'm assuming you've a 914 manual by one of the 2 aftermarket authors. If not get one and we'll go from there. Is this your conversion or the Porsche 6? What I'd like to identify 1st is which harness are you using. Does it match the model year. Was it an original 6. Sorry, I haven't followed enough of your posts to know fore sure. Items such as hazard, turn, brake, stop lights, running lights, etc. Should be pretty much the same (and I stand corrected if needed) between the 4 & 6. Also @DR914 , little things like an incorrectly installed light bulb (1034 vs 1176) etc can cause havoc. If you don't have I'd suggest you get the Tips & Tricks tutored by Dr 914. So beginning from the start............you have 19?? 914. Was it an original 6 or after market? Reading the electrical schematic for 70-74 years is what most people are used to seeing and quite easily taught. The 75-76 models employ an electrical Flow Chart but both are easily interpreted. (IMG:style_emoticons/default/beerchug.gif)


I bought her three months ago. Originally a 1974 1.8, it’s been highly modified into a 914-6 GT Tribute with a 3.2 Carrera. No idea about the harness… pretty much an electrics moron, lol.


Attached thumbnail(s)
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Spoke
post Jan 28 2026, 10:22 PM
Post #6


Jerry
*****

Group: Members
Posts: 7,325
Joined: 29-October 04
From: Allentown, PA
Member No.: 3,031
Region Association: None



What year is the 914?

Does the blue high beam light come on as well the R turnsignal indicator? Do the outside turnsignals on the right also come on?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
904svo
post Jan 29 2026, 07:23 AM
Post #7


904SVO
***

Group: Members
Posts: 1,129
Joined: 17-November 05
From: Woodstock,Georgia
Member No.: 5,146



QUOTE(Spoke @ Jan 28 2026, 08:22 PM) *

What year is the 914?

Does the blue high beam light come on as well the R turnsignal indicator? Do the outside turnsignals on the right also come on?


So9unds like the ground is missing (brown wire) on the spedo.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Spoke
post Jan 29 2026, 09:15 AM
Post #8


Jerry
*****

Group: Members
Posts: 7,325
Joined: 29-October 04
From: Allentown, PA
Member No.: 3,031
Region Association: None



Here is a simplified version of the turnsignal system in a 914. Note that headlights and high beams are nowhere to be found.

It sounds like you're going to be chasing wires to see what was modified.

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
burlybryan
post Jan 29 2026, 09:45 AM
Post #9


Member
**

Group: Members
Posts: 144
Joined: 25-May 20
From: Saint Paul
Member No.: 24,311
Region Association: None



QUOTE(904svo @ Jan 29 2026, 07:23 AM) *

QUOTE(Spoke @ Jan 28 2026, 08:22 PM) *

What year is the 914?

Does the blue high beam light come on as well the R turnsignal indicator? Do the outside turnsignals on the right also come on?


So9unds like the ground is missing (brown wire) on the spedo.


Yeah, the first place I would start is to pull that gauge out and verify the wires. Jeff has a nice diagram referencing the wires and functions.

https://bowlsby.net/914/Classic/zTN_Elect_DashGauges.jpg
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Shivers
post Jan 29 2026, 09:45 AM
Post #10


Senior Member
****

Group: Members
Posts: 3,240
Joined: 19-October 20
From: La Quinta, CA
Member No.: 24,781
Region Association: Southern California



QUOTE(kenshapiro2002 @ Jan 28 2026, 08:21 PM) *



I bought her three months ago. Originally a 1974 1.8, it’s been highly modified into a 914-6 GT Tribute with a 3.2 Carrera. No idea about the harness… pretty much an electrics moron, lol.


If I understand your question, It may be that because they started with a 1974 it is the original wiring. My 72 has the two arrows that blink one way or the other depending on your selection on the blinker switch. On the later cars that went the way of the dodo. They both blink at the same time no matter what your selection is.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
5 User(s) are reading this topic (2 Guests and 0 Anonymous Users)

 



- Lo-Fi Version Time is now: 29th January 2026 - 11:13 AM
...