rlutterb
Samba Member
Joined: January 10, 2006
Posts: 1417
Location: Carrollton Ohio
|
 Posted: Thu Oct 20, 2022 1:40 pm Post subject: Wiring Questions |
 |
|
Been a while since I did wiring and even after looking at the diagram, I don't remember a few things. Can you help me with a few questions......
#1) For the tail lights, what is the order to plug them in
I got the running lights on both sides but cannot figure out brake, turn signal, backups
Driver side (confirmed the grey wire on right powers running lights)
Passenger side. The one hooked up powers running lights. Why only THREE plugs on this side. The larger gauge black wire doesn't have a home on this passenger side
#2) What is this under the back seat
#3) What are these two wires coming through the fire wall into the engine bay
_________________
1973 Super Beetle project
1978 VW convertable
1987 El Camino
1995 Miata M
2015 Chevy Silverado |
|
ashman40
Samba Member
Joined: February 16, 2007
Posts: 16771
Location: North Florida, USA
|
| Posted: Thu Oct 20, 2022 8:08 pm Post subject: Re: Wiring Questions |
|
|
| rlutterb wrote: |
| #1) For the tail lights, what is the order to plug them in |
Technically, the connections at the 8-way junction are pass thru between opposing pairs and do not interconnect. So, as long as the color of the harness wire is connected to the correct colored wire for the taillight assembly you are good.
Here is a pic from Speedy Jim's site that shows what color harness wire connects to the 4 colored wires that run to the taillight assembly.
If you really want to wire it like it came from the factory, look at the '72-earlier wiring harness and connect the pairs in the order shown at the taillight junctions.
| rlutterb wrote: |
| Passenger side... Why only THREE plugs on this side. The larger gauge black wire doesn't have a home on this passenger side |
The grey/red wire and white(?) wire should not be plugged into the 6-way junction in your pic. On the right side, the parking light wire (grey/red) powers the parking light in the taillight housing but also powers the license plate lamp (grey/blue). These white and grey/striped wires have their own separate 3-way junction (y-connector pictured below) where they come together. This separate y-connector allows the single grey/red wire to be split into two so it can power both the parking light and license plate light.
The remaining 6-wire pairs (turn, brake and reverse) connect using the 6-way junction.
The thick black wire should be for the reverse lights, I think. It connects to a blue wire running to the taillight housing. The black and blue wires come together in the 6-way junction.
| rlutterb wrote: |
#2) What is this under the back seat
|
Rear window defroster relay (J9).
| rlutterb wrote: |
#3) What are these two wires coming through the fire wall into the engine bay
|
That looks like the reverse light wires that run to the reverse light switch at the front end of the transmission. Crawl under the car and confirm this is where they go.
If they are the two reverse light wires, one (it doesn't matter which) connects to an ignition switched power source (normally the ignition coil #15 (+) terminal). There is a fuse between the power source and this wire to protect the reverse light wiring.
The other wire is the switched output of the reverse light switch. It is powered when the car is in reverse. This wire connects to a 3-way y-connector (right there were it comes thru the firewall) to split into two black wires. One runs to each taillight (L & R) where the black wire junctions with the blue wire that runs to the reverse light bulb in the taillight housing.
_________________
AshMan40
---------------------------
'67 Beetle #1 {project car that never made it to the road  }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!} |
|
