electrical issue please help!!
electrical issue please help!!
i have an 87 turbo II and the with the key out the the ignition the passenger trun signals stay on... what the hell is that? i have no clue... checked all the fuses... and if i put the key in and turn the signals on its as if i turn my hazards on... please help i need to register the car soon and i cand drive around like this!
Rotary Freak
Joined: Jul 2008
Posts: 1,660
Likes: 2
From: FORT WORTH TEXAS
The TURN fuse is on a buss that only gets power if the key is in ON or better.
The HAZARD fuse is on the batt buss which has pwr 24/7.
Therefore if the car is wired per the stock wiring, the turn lights cannot light up using the TURN fuse. Only the HAZARD fuse could light them up if the key is OFF.
So the next time you pull the key out and see the passengers side lit up, remove the TURN fuse and see if they are still lit up.
If they are still lit up, then now pull the HAZARD fuse and see if they go out.
IF they went out when you pulled the TURN fuse. I'd say the wiring has been altered from stock somewhere. IG1 buss cannot have power on it unless the key is to ON or better (TURN is on IG1 buss). IG1 can have power on it if someone rewired *something* and caused the batt buss to backfeed the IG1 buss thru the *something* that is miswired.
Make sure you have the correct CPU in the car. Compare its part number with the one found in the PARTS FISCHE. Parts fische site can be found on the FAQ thread on this site.
The HAZARD fuse is on the batt buss which has pwr 24/7.
Therefore if the car is wired per the stock wiring, the turn lights cannot light up using the TURN fuse. Only the HAZARD fuse could light them up if the key is OFF.
So the next time you pull the key out and see the passengers side lit up, remove the TURN fuse and see if they are still lit up.
If they are still lit up, then now pull the HAZARD fuse and see if they go out.
IF they went out when you pulled the TURN fuse. I'd say the wiring has been altered from stock somewhere. IG1 buss cannot have power on it unless the key is to ON or better (TURN is on IG1 buss). IG1 can have power on it if someone rewired *something* and caused the batt buss to backfeed the IG1 buss thru the *something* that is miswired.
Make sure you have the correct CPU in the car. Compare its part number with the one found in the PARTS FISCHE. Parts fische site can be found on the FAQ thread on this site.
^^thanks i really appreciate it... ive check it appears to be wired correctly now the flasher unit(dont know the correct name but it clicks wheen the signals are on) on one of the larger plugs coming out of the unit there is a very thin black wire with a yellow tracer and if i wiggle that wire and only that wire it will either stop flashing or both will flash... i cant find this wire in my diagrams... what is this wire for?
Last edited by fcnoevil; Jul 12, 2009 at 11:32 AM. Reason: i is retard
Rotary Freak
Joined: Jul 2008
Posts: 1,660
Likes: 2
From: FORT WORTH TEXAS
Which plug? The one at the top or one of the bottom plugs?
The top plug with the most wires has a black/yellow that feeds the alternator relay inside the CPU. Only powered if the key is to ON or better.
Also feeds a seat belt timer and some kind of warning unit.
I assume series four car.
METER fuse feeds that black/yellow wire.
The top plug with the most wires has a black/yellow that feeds the alternator relay inside the CPU. Only powered if the key is to ON or better.
Also feeds a seat belt timer and some kind of warning unit.
I assume series four car.
METER fuse feeds that black/yellow wire.
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