| Author |
Message |
1973T2bRivieraGE
Samba Member
Joined: August 06, 2025
Posts: 14
|
 Posted: Sun Aug 10, 2025 4:32 am Post subject: wiring open ends 73 T2b Riviera GE engine |
 |
|
Hi,
I'm still working on an introduction to the forum with my 1973 Riviera T2b project which is almost done. Any hints on correct forum placement are most welcome.
Here I have a left question regarding wiring. As you see in the pictures I have some "open ends".
1.) There are two resistors (as I would identify them) in the engine bay. The white one seems to be a "pre-resistor" for the coil? No wire attached to it. Engine starting and running as it should. Can anybody help me identifying (and connecting it) correctly?
The metallic one could be related to the radio? Does anybody recognize it and again help me identifying (and connecting it) correctly?
2.) There is a wire with a grey isolation holding two green wires and an open copper wire. I'm absolutely lost what this could be for! Does anybody recognize it, explain it, guide me to correctly connect it?
Thank you and greetings from Cologne!
Markus
_________________
With greetings of a Classics Enthusiast from Cologne, Germany!
Markus |
|
| Back to top |
|
 |
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 52917
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Sun Aug 10, 2025 8:28 am Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
Welcome!
VW didn't install either of those resistors, a factory style electrical system doesn't use them.
Without seeing where that gray cable goes I can't confirm, but it's very likely part of the dealer diagnostic system, also redundant now.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 52482
|
| Posted: Sun Aug 10, 2025 4:27 pm Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
| Your gray sheathing looks like it contains two green conductors plus a shield wire or at least on uninsulated ground.. Nothing like that on there from the factory that I am aware of. |
|
| Back to top |
|
|
1973T2bRivieraGE
Samba Member
Joined: August 06, 2025
Posts: 14
|
| Posted: Tue Aug 12, 2025 1:01 am Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
| busdaddy wrote: |
Welcome!
VW didn't install either of those resistors, a factory style electrical system doesn't use them.
Without seeing where that gray cable goes I can't confirm, but it's very likely part of the dealer diagnostic system, also redundant now. |
Yes - the wire seems to be related to the dealer diagnostic system.
I remember the white pre-resistor from my Mustang. It looks very similar. I guess it goes to the coil there to keep the voltage low and thus "de-stress" the coil.
I'll insulate the open end and ignore both for now.
Thank you very much!
_________________
With greetings of a Classics Enthusiast from Cologne, Germany!
Markus |
|
| Back to top |
|
|
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 52917
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Tue Aug 12, 2025 7:43 am Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
The correct coil uses no resistor, it's powered direct from the harness.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
jjvincent
Samba Member
Joined: January 11, 2016
Posts: 1439
Location: Bethlehem, PA
|
| Posted: Tue Aug 12, 2025 9:35 am Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
| Those look like old school resistors that someone put in because of LED's installed. |
|
| Back to top |
|
|
Air_Cooled_Nut
Samba Member
Joined: March 27, 2004
Posts: 3069
Location: Portland, Oregon
|
| Posted: Sat Aug 16, 2025 6:22 pm Post subject: Re: wiring open ends 73 T2b Riviera GE engine |
|
|
| jjvincent wrote: |
| Those look like old school resistors that someone put in because of LED's installed. |
Agreed!
_________________
Toby http://www.aircoolednut.com/
Did I mention that I'm an original Darksider?
'72 VW Squareback, 2007cc, GB 5-speed, rag top; '76 VW Riviera Penthouse Sundowner 2.0L; 2015 Audi S5 Cabby w/Stage II APR; '06 Ducati Sport Classic 1000; '14 Ducati Diavel Strada
The First Invasion |
|
| Back to top |
|
|
|
