tail-light help

hangsupra · 10-15-2006, 08:50 PM

when i turn on the headlight at night.. my headlight come on but not my tail light...

what i have done:
i replaces the relay for the headlight under the hood and also the one under the driverside foot panel n taillight failer in the back of the trunk but it didnt that didnt help at all... and beside that i already replace all the bulb in the back tail light... it didnt solve the problem either... so now i'm doom...

when i step on the brake padel... it doesnt matter the headlight on/off... all the brake light from the back tail light comes on also the third brake lights too... so i doom now... i dont know where else to check... can anyone help me please... cause i dont want to drive at night n get myself a ticket from the pig...

Murd · 10-16-2006, 02:42 PM

Get a test light and check your wires while your headlights are on. It'll tell you if you're getting current back there. If you're not keep going up the wire till you find where the issue is.

hangsupra · 10-17-2006, 12:18 AM

Quote:

Originally Posted by Murd

Get a test light and check your wires while your headlights are on. It'll tell you if you're getting current back there. If you're not keep going up the wire till you find where the issue is.

i did do a test light but i didnt found anything...

if i remember right... only find one positive wired only... and the rest were blank...

so i'm not sure how many hot/positive wired i suppose to have while the headlight is on...

anything else i can check....

Murd · 10-17-2006, 08:32 AM

Hmmm... If you're getting current on the wire back there, you should be getting light. Make sure the plug isn't corroded in any way, and make sure it's getting connections where it's supposed to. I've had some where the back spring wasn't connecting properly, and some where the corroded plug caused a bad ground. Check to see how it's grounded too. If it's a ground wire trace it back and make sure it's grounded properly. If you can have someone press on the brakes, so you can see which wire is the hot brake wire.

Multistrada1 · 10-19-2006, 12:52 AM

The problem is likely under the hood. Mine just did almost the same thing except mine had taillights but not brake lights. I looked all over and could not find anything wrong. The mechanic found a loose wire that had broken its solder connection. They found it in a hard to check place under the master cylinder.

hangsupra · 10-19-2006, 01:24 AM

Quote:

Originally Posted by Murd

Hmmm... If you're getting current on the wire back there, you should be getting light. Make sure the plug isn't corroded in any way, and make sure it's getting connections where it's supposed to. I've had some where the back spring wasn't connecting properly, and some where the corroded plug caused a bad ground. Check to see how it's grounded too. If it's a ground wire trace it back and make sure it's grounded properly. If you can have someone press on the brakes, so you can see which wire is the hot brake wire.

i forgot to do that... let other people step on the brake n do the check wired... i need to do that... anything else i suppose to check...

hangsupra · 10-19-2006, 01:25 AM

Quote:

Originally Posted by Multistrada1

The problem is likely under the hood. Mine just did almost the same thing except mine had taillights but not brake lights. I looked all over and could not find anything wrong. The mechanic found a loose wire that had broken its solder connection. They found it in a hard to check place under the master cylinder.

huh? under the master cylinder... is it the brake or the clutch cylinder...

Multistrada1 · 10-19-2006, 02:55 AM

Mine was in a wire that led from the master cylinder. Just keep checking wires, since yours is not in the brake light system it may not be down under like mine was.

hangsupra · 10-19-2006, 11:53 PM

Quote:

Originally Posted by Multistrada1

Mine was in a wire that led from the master cylinder. Just keep checking wires, since yours is not in the brake light system it may not be down under like mine was.

ok i keep that in mind...

hangsupra · 10-19-2006, 11:55 PM

does anyone know how many hot wired suppose to be on while i turn the head light on...

how many hot/positive wired i suppose to have ont he back tail-light... if you know... then wat color or wired pin was it... please help out..

10-15-2006, 08:50 PM	#1
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	tail-light help when i turn on the headlight at night.. my headlight come on but not my tail light... what i have done: i replaces the relay for the headlight under the hood and also the one under the driverside foot panel n taillight failer in the back of the trunk but it didnt that didnt help at all... and beside that i already replace all the bulb in the back tail light... it didnt solve the problem either... so now i'm doom... when i step on the brake padel... it doesnt matter the headlight on/off... all the brake light from the back tail light comes on also the third brake lights too... so i doom now... i dont know where else to check... can anyone help me please... cause i dont want to drive at night n get myself a ticket from the pig...

10-16-2006, 02:42 PM	#2
Murd 3" Exhaust Join Date: Jul 2006 Location: Vancouver, WA. Posts: 233	Get a test light and check your wires while your headlights are on. It'll tell you if you're getting current back there. If you're not keep going up the wire till you find where the issue is. __________________ 1989 N/A Targa 5spd. Metallic Grey, w/grey interior. No mods done.

10-17-2006, 08:32 AM	#4
Murd 3" Exhaust Join Date: Jul 2006 Location: Vancouver, WA. Posts: 233	Hmmm... If you're getting current on the wire back there, you should be getting light. Make sure the plug isn't corroded in any way, and make sure it's getting connections where it's supposed to. I've had some where the back spring wasn't connecting properly, and some where the corroded plug caused a bad ground. Check to see how it's grounded too. If it's a ground wire trace it back and make sure it's grounded properly. If you can have someone press on the brakes, so you can see which wire is the hot brake wire. __________________ 1989 N/A Targa 5spd. Metallic Grey, w/grey interior. No mods done.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Tail Light Questions	suprajsac	MKIII Supra	3	12-13-2008 01:12 PM
Grounds for the left tail light	supraman121	MKIII Supra	1	11-08-2007 12:57 AM
Tail light conversions..need help	TargaMKII	MKII Supra	8	02-28-2006 06:05 PM
battery warning light / tail lamp failure warning light	MattJ	MKIII Supra	5	02-06-2006 07:22 PM

10-19-2006, 12:52 AM	#5
Multistrada1 Stock Join Date: Oct 2006 Location: Tacoma WA Posts: 10	The problem is likely under the hood. Mine just did almost the same thing except mine had taillights but not brake lights. I looked all over and could not find anything wrong. The mechanic found a loose wire that had broken its solder connection. They found it in a hard to check place under the master cylinder.

10-19-2006, 02:55 AM	#8
Multistrada1 Stock Join Date: Oct 2006 Location: Tacoma WA Posts: 10	Mine was in a wire that led from the master cylinder. Just keep checking wires, since yours is not in the brake light system it may not be down under like mine was.

10-19-2006, 11:55 PM	#10
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	does anyone know how many hot wired suppose to be on while i turn the head light on... how many hot/positive wired i suppose to have ont he back tail-light... if you know... then wat color or wired pin was it... please help out..