ViribusUnits

I finaly learned how to read the wireing diagram in the service mannual for my car.

Question 1. I've been looking for a reason my tach sometimes plays dead. I discovered that the input for my tach comes from my transisterized ignition box, to my fuse/relay pannal, to my dash pod. Somewhere in the fuse relay pannal, there must be a jumper. I belive the two I need are O7, and G7. I've yet to look at my fuse pannal, to see if I can locate the connecters. Is there a trick to reading the pannal? Any clues to how it's arranged?

Question 2. I noticed while I was looking at my electrical charts that it says there is a ground on the frount lock member. Any clue where exactly this is? I've looked for a brown, or covered wire that would serve as a ground, but I can't find one. My driver's side lock is acting funny, and I'm curious if a dirty ground is the problem. I would clean it, but I don't know where it is. btw, I've already checked the little fuse behind the pannal. It's good.

Question 3. I have what apperes to be a metal jumper in the IX relay possion. The jumper apperes to be made of one peice of bent metal. Kinda a cool design actualy. It's connecting the far left center plug with the center plug in the middle. According to my owner's mannual, that relay is unused. According to my wireing diagram, that relay goes to some things on an automatic transmittion. I have a mannual. Why would I have a jumper there? It's been there since I bought the car.

Question 4. I'm trying to wire my Sony Xplode radio to my Hirschmann non OEM power antinna. The coaxial cable is already hooked up, but the power for the retration motor is not. It's not makeing much since to me. Can anyone point me toward a way to figure it out?

Thank you.

jpitman2

Only one I know is the jumper is a bypass for what would be starter inhibit for an auto - ie you can always crank a manual, but autos only when the selector is the right place.
jp

Jim V

For #1 (if I'm reding right) the connectors along the bottom of the fuse panel are hand lettered a,b,c from L to R with black marker(this would be the O and the G). The terminals are numbered on each plug( the 7s) and *as I remember* the numbers are cast into the plugs very small, best to double check the wire color also. The fold-out part of pg. 97-155 give an explaination.

#2 I believe this refers to the hood lock member, the panel where the lower latch is; this is the only spot I recall having a L and a R ground and looking at the chart for your year these are not refered to in any other way and we know they are there.

#3 was covered by jpitman2

#4 I'm no stereo guy, but I'll guess that the ant. is wired to main radio power??

ViribusUnits

1. Thanks. I like you alought already! You spell like me!

2. The hood lock member? To be honest, I'm not very sure what part of the car your talking about. Please, can you tell me some more?

3. Thanks jpitman2. That makes sence. It looks OEM, and your suggestion makes sence, so I'm not remvoveing it!

4. From what I can tell on the wireing diagram, the OEM antenna has a wire that connects to the radio, one that connects to a ground, and one that connects to a sourse of power. And then the coaxial cable. If I had the OEM unit, I feel confident that I could wire it up. The problem is I don't know how the non OEM unit I got, and the non OEM stereo I got work together. I know a number of folks have the Sony Xplode stero, and someone should have the same antenna I got, as it is sold by 928intl. I'm hopeing that guy could give me a pointer. I don't know what version of the Xplode I've got. I do know that it's no longer offered by sony, and that it didn't come with a mannual. Oh how I wish it came with a mannaul. The anntenna too!

BrianG

#4
Usually, the power antenna unit has 3 leads. one gnd, one + or keyed +, and one "signal". IIRC SONY uses an orange lead from the head-unit to provide the signal. It goes "+" with the unit's "on" switch or may only go "+" when the radio is selected. The antenna motor is internally wired to extend-and-stop when the signal lead sees "+", and to retract-and-stop when it sees "0".
You can test for the signal lead from the sound head by using a "test lead" (wire and bulb) to ground and switching the unit on.
You can test the antenna by wiring the ground and "+", and jumpering the signal lead to "+".

ViribusUnits

OK, thanks. I'll see what I can do.

Quick question, where would I go looking for a plug to hook the wire up to the back of the in the dash radio?

Radio Shack? I know they suck, but what choice do I have?

Jim V

VU, In #2; the panel that holds the lower latch for the hood, 1st panel behind front bumper with the hood open, foward of the light motor.
Refer to pg 97-01 in the manual fig.s 4&5.

ViribusUnits

Thank you, not quite what I was looking for for number 2, but that rules that out as the problem with my locks.

Next...

BrianG

VU.. I'm not sure that I understand your question. Sony typically supplies a "pigtail plug" with their units. That is a plug that plugs into the radio and has about 6-8" of each color-coded wire hanging from the plug. The installer creates his own "harness" as required, from there on out. That "pigtail plug" should have the antenna signal (orange) wire in it.....
If you are looking for a connector for the splice into the Porsche wiring harness to carry the signal back to the antenna, it will be a variety of Bosch connector, and most "German car dealerships" (volkswagen for best prices) should be able to match you up, if you insist on "factory" connectors. The same will apply at the antenna end, incidentally, so get that end too.

ViribusUnits

OK, now were makeing progress!

I don't have the connecter for the radio. The stereo was installed by the PO, but he didn't wire the antenna motor up. I don't have any lititure, or extra parts that would have come with the radio.

I've got no problem with spliceing the wire properly, and then coveing the mess up with electrical tape. It makes a good, reliable, cheap connection. I'm not dependent on doing things the factory way. I belive I can hanndle the antenna motor wireing up now.

Do you know where I could get the pig tailed connecter?

Thanks.

BrianG

Call a local Sony dealer (a bigger one) with your unit's name/model#/serial#. The "Explode" series is relatively new, and they should be able to hook you up with a new one.

ViribusUnits

OK, I'll give it a shot. I don't have the name model, or such, but they should know.

Thanks

ViribusUnits

Additional Question 1.

Can a bad tach cause a miss?

If, while the engine is running, I'm getting voltage at the correct wire for the tach. on the connecter to the dash pod, and that the tach. is not working, would I suspect the gauge, or printed circut, or the cheap connecter, rather than the rest of the system?

Thanks.