Author Topic: Parking lights turning on randomly.  (Read 211 times)

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epantano

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Parking lights turning on randomly.
« on: Dec 02, 2018, 06:55:16 PM »
Okay, guys, I have a weird one for all you out there. I have an 87 P/U w/ a 3rz swap. and my issue is that my parking lights will turn on randomly as if I've turned the switch to the first click before the headlights turn on, the dash even lights up.

Some background, this was not an issue until about 4 days ago when it rained, and i realized I had a rust hole in the corner up by the fuse box. So i assumed it must be the fuse box. I pulled it out and took my air compressor and blew all the water to make sure it was dry. It didn't seem like anything really came out and that water really even got in there but for good measure i did this.

The next morning I come out and the lights are on, I click the switch on and off and it goes out. Hmm...

I pull all the connectors on each corner and check if water got into them, all looked dry and for good measure, I fill them with dielectric grease to hopefully prevent any issues in the future.

The issue still is there, and tonight I went out to check to see if the lights were on and they were not. I decided to play with the switch a little and clicked it on and off a bunch of times and randomly sometimes it would stay on, then I click it on and off again and it would go out. It seems as it has an open circuit? But I'm at a loss of how to even troubleshoot it at this point.

Is there a way to tell if the switch has gone bad?

Any recommendations are welcome at this point. I am basically living out of the truck and traveling so I need to get this fixed asap, as it is my home and my driver.


AZ Rockit

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Re: Parking lights turning on randomly.
« Reply #1 on: Dec 03, 2018, 02:24:49 AM »
Hey epantano,

Can you provide information? Missed the discussion in the shout box.

1. Did this issue start after the 3rz swap or only after the rain?

2. Can you send a link to the 1987 22r wiring harness you used?








82 SC LB, 22r with 83 celica EFI, 31s
84 SC LB, 85 excab, 22r engine, 63s, 31s
85 4runner, 3rz, R151F, 244:1, 37s
85 PU SC LB, 22re Performance Stage 2 engine, 32s
85 PU SC SB, 22r
89 4runner on a 94 PU chassis (Montana Runner), no drive train, 3rds, or engine

AZ Rockit

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Re: Parking lights turning on randomly.
« Reply #2 on: Dec 03, 2018, 02:26:57 AM »
Hey epantano,

1. Did this issue start after the 3rz swap or only after the rain?


I see you answered this. How many days between the finished 3rz install and the rain storm?
82 SC LB, 22r with 83 celica EFI, 31s
84 SC LB, 85 excab, 22r engine, 63s, 31s
85 4runner, 3rz, R151F, 244:1, 37s
85 PU SC LB, 22re Performance Stage 2 engine, 32s
85 PU SC SB, 22r
89 4runner on a 94 PU chassis (Montana Runner), no drive train, 3rds, or engine

AZ Rockit

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Re: Parking lights turning on randomly.
« Reply #3 on: Dec 03, 2018, 05:06:38 AM »
epantano,

Did you travel from some place cold to someplace not so cold?

Here is a link from ~2007 for a TSB regarding headlights coming on after extended cold exposure. I'm still looking, but it appears either the switch or a relay is faulty.

I don't have your wiring harness diagram. Any 87 truck I find has the 22RE, not 22r as you stated, so before I look further I would like the link to your stock wiring harness. I know the 22r and 22re engine was available in 87 trucks.

http://forums.genvibe.com/files/imported/516851=15595-T-EL003-03.pdf
82 SC LB, 22r with 83 celica EFI, 31s
84 SC LB, 85 excab, 22r engine, 63s, 31s
85 4runner, 3rz, R151F, 244:1, 37s
85 PU SC LB, 22re Performance Stage 2 engine, 32s
85 PU SC SB, 22r
89 4runner on a 94 PU chassis (Montana Runner), no drive train, 3rds, or engine

AZ Rockit

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Re: Parking lights turning on randomly.
« Reply #4 on: Dec 03, 2018, 05:08:45 AM »
epantano,

Did you travel from some place NOT SO COLD cold to someplace not so cold?



Did you travel from a temperate climatic to a cold climate, where the truck sits all night?
82 SC LB, 22r with 83 celica EFI, 31s
84 SC LB, 85 excab, 22r engine, 63s, 31s
85 4runner, 3rz, R151F, 244:1, 37s
85 PU SC LB, 22re Performance Stage 2 engine, 32s
85 PU SC SB, 22r
89 4runner on a 94 PU chassis (Montana Runner), no drive train, 3rds, or engine

AZ Rockit

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  • Turtle Points: 2320
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  • Crawling with 300K
Re: Parking lights turning on randomly.
« Reply #5 on: Dec 03, 2018, 05:18:02 AM »
epantano,

looked a bit more. Appears from all the discussions I found: 03 corolla, 09 tacoma, its the switch for the primary root cause.

this could heal when you return to warmer weather, if you have traveled to a colder climate and let the truck sit all night.
82 SC LB, 22r with 83 celica EFI, 31s
84 SC LB, 85 excab, 22r engine, 63s, 31s
85 4runner, 3rz, R151F, 244:1, 37s
85 PU SC LB, 22re Performance Stage 2 engine, 32s
85 PU SC SB, 22r
89 4runner on a 94 PU chassis (Montana Runner), no drive train, 3rds, or engine

gnob

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Re: Parking lights turning on randomly.
« Reply #6 on: Dec 03, 2018, 08:33:38 AM »
Tail light relay took on water....
hold this. . .

epantano [OP]

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Re: Parking lights turning on randomly.
« Reply #7 on: Dec 03, 2018, 06:04:18 PM »
Thanks for all the replies guys!  :beerchug: :beerchug:

Hey epantano,

Can you provide information? Missed the discussion in the shout box.

1. Did this issue start after the 3rz swap or only after the rain?

2. Can you send a link to the 1987 22r wiring harness you used?

The issue started only after rain. It was completely fine for weeks with the completed 3rz swap.

I see you answered this. How many days between the finished 3rz install and the rain storm?

About 1 month after 3rz install was a rainstorm.

Did you travel from a temperate climatic to a cold climate, where the truck sits all night?

I've been in a similar climate area since the swap was completed. Been exploring Socal.

epantano,

looked a bit more. Appears from all the discussions I found: 03 corolla, 09 tacoma, its the switch for the primary root cause.

this could heal when you return to warmer weather, if you have traveled to a colder climate and let the truck sit all night.

Was there any solution to this?

Tail light relay took on water....

I may have a spare, ill try to pick one up otherwise and replace to see if this makes a difference.


I think if it has to do with anything in the cab, i've remedied the water entering the cab so hopefully, once I figure out the issue it won't happen again
Ill report back in a few days!




epantano [OP]

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Re: Parking lights turning on randomly.
« Reply #8 on: Dec 04, 2018, 02:48:46 PM »
Okay so looks like gnob was correct. I replaced that relay and it has been good. I'm going to keep on checking to see if it does it again. But so far no issues yet.

Sent from my Nexus 6 using Tapatalk


gnob

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Re: Parking lights turning on randomly.
« Reply #9 on: Dec 04, 2018, 04:21:49 PM »
Make sure your cowl and cowl drains are clean. This was causing a leak for me.
hold this. . .

 
 
 
 
 

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