86 442 signal stays on
February 1st, 2011, 05:16 PM
#1
Registered User
Thread Starter
Join Date: Oct 2007
Posts: 21
86 442 signal stays on
can anyone help me out? i got an 86 442 and when my headlights are on the left light stays on...no flashing...the right one works just fine...when the lights are off everything is just fine...and another thing my front markers come on when i press the brake...all suggetsions are appreciated
February 1st, 2011, 07:15 PM
#3
Registered User
Join Date: Feb 2008
Location: Plano, TX
Posts: 11,798
Right types per socket?
I have seen odd problems like this (running lights on with brakes) come up when a single filament bulb (like a 1156) gets stuck in a dual filament socket (for a 1157). The base contact shorts the two circuits together. I have also seen people stick appliance bulbs in there just because the bases match.
Recheck the back left taillights (two sockets)...
If they are all the right types and inserted in the sockets correctly, and all wiring is undamaged and grounds are secure and clean, then it will be time to break out the wiring diag...
I have seen odd problems like this (running lights on with brakes) come up when a single filament bulb (like a 1156) gets stuck in a dual filament socket (for a 1157). The base contact shorts the two circuits together. I have also seen people stick appliance bulbs in there just because the bases match.
Recheck the back left taillights (two sockets)...
If they are all the right types and inserted in the sockets correctly, and all wiring is undamaged and grounds are secure and clean, then it will be time to break out the wiring diag...
February 2nd, 2011, 12:07 PM
#5
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,722
You have a bad ground on the side that doesn't flash. When the headlights (and parking lights) are off, the turn signal grounds though the parking light filament. When the lights are on that filament sees +12V and thus can't ground the turn signal anymore.
February 4th, 2011, 07:19 AM
#6
'87 Delta 88 Royale
Join Date: Dec 2010
Location: Margate, England
Posts: 2,513
bad ground
I think Joe has hit on the cause of your problem, While you are at it I would check the grounds on all the light circuits, ALL current through the lighting cicuits have to pass through the ground, if it cant it looks for an easier route such as the running lights or headlights giving the problems such as the ones tou described.
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