ce84pl72

I have a 1985 Porsche 928 5 speed, I have no power to mt reverse lights, The Bulbs are good, The back light switch is good, I have pull all the fuses and checked them, The relay that is suppose to turn them on is good, that relay if I am correct also controls the power to the side mirrors, they are working, I don't know what to do next, Again there is no power to the back up switch in this manual transmission, HELP

davek9

Hi, do you have power at the connection in the spare tire compartment?
From there it goes to the switch on the trans, IIRC. There also should be a metal bar like jumper in place of the Auto Kick down relay.in the CE panel.
Does the Key alarm work? (turn off car, leave key in and open a door), chime should sound, same as if light are left on.

Dave K

gazfish

Do they work when you have the lights on at the same time?

ce84pl72

With All Lights on there are still no Back Lights , Even with just parking lights, No Back - up lights

ce84pl72

Dave,
Thank-you for your information, The Power were the Battery is , I That I see that I can check it the Battery, I not sure by what you mean from your 2nd statement, "Metal Bar"?, the relay for the lights are on the panel on passenger side, "HOWEVER," when I leave the Key and open the Door, The Alarm will "NOT"

Battery Compartment, I only that the Positive & Negative Connection, off the positive is another wire which leads under the Automobile
some where I attached a photo of my battery compartment

Taguid

^^^The grey cloth in the spare tire well is covering a black plastic cover that has connectors in it for the rear of the vehicle. That's where he is referring to.

ce84pl72

I am Not Sure how to check

The Cover To the Connections
the power at this connection

WyattsRide

What Dave means by "Metal Bar", is that in XXII position of the CE panel there should be no #53 relay when you have a manual transmission. There should be a jumper bar there. #53 relay is only when you have a Automatic.
See pic below.



Also, print yourself out one of Alan's CE charts for your 85. Post #9

https://rennlist.com/forums/928-foru...all-years.html

ce84pl72

Relay Area, No Jumper
I have had this Porsche 1985 Porsche 5 speed, since 2005, only time I touch this area is because of the XXV fuel relay will burn out for some reason, I always carry a spare, I have never touched anything else, I have a realy in that place were you show a jumper, Thank-you for looking at this issue, I not really sure if the Back lights ever worked now, what next?

WyattsRide

If it were me, I would purchase the correct jumper for XXII to replace the relay and go from there. You can contact 928Rus or 928 International for these. They are not expensive. I cannot tell you if using a relay in this position, instead of the jumper (on a manual) would not get power to the reverse switch or not. Maybe someone like Dave or Alan can explain it.

ce84pl72

I will purchase the Jumper today, Thank-you for your Time

ce84pl72

So Sorry, Do you kindly have the linked to this part, I cannot locate it

WyattsRide

Part #?

928.615.125.00

ce84pl72

Thank-you all very much, Part has been ordered, I will Keep you up to date

Thank you, your order has been placed.

Your order number is 16032. An email confirmation

Wisconsin Joe

I'm not entirely sure I understand it, but if I'm wrong, hopefully one of the 'smart guys' will correct me.

Your problem is that the relay won't work. It needs the 'jumper bar'. It's just a brass plate, bent at the right angles in the right places.

The autos use the shifter to activate the reverse lights. It uses a smaller switch that goes through the relay and makes them go on.
The 5 speeds use a switch inside the transmission itself. Big and robust enough to handle the current without a relay. So the relay just gets bypassed.

Again, this may or may not be correct. But it's how I understand the setup.