[35olds]

On my 36 Ford,hotrod,I had working turn signals.They worked good but I wanted to use the horn grills so I replaced them with sealed amber lights that I fit in behind the grills.The turn signals work good,very bright,the parking lights work good too,but when they are on ,or full headlights are on the turn signals will not work.The dash blinker and rear lights,turn and brake lights still work as before. I tried switching wires but tht does not work.Any answers?? Thanks to all ! 35 OLDS

[BinderRod]

I have the same exact problem

[docvette]

Doc here,

Sounds like you are backfeeding the T/S system through the headlight system when the switch is on..You may need diode Isolation.

How many filaments are in the front? 1 or 2? If 2 the Park/HL Markers will be the less bright filament, and the TS will be the brighter filament..

If 1 filament, (or two to the same filament) On the front markers you can't run park or HL markers together with TS without isolation..on the same filament, It will backfeed through the headlight system when it's on.

If I read your problem correctly..

We assume you have already proved good ground bonding..

Doc

[35olds]

35 olds here, Thanks for the reply Doc.My lamps are 2 filament.They are labeled as to which wire is the parking light and which one is the turn signal,same for the ground,I've got them wired as marked. I tried swiching the wires but then the light will come on but will not blink and the parking light will not come on at all wired that way. meaning ,switching the turn signal wire with the parking filament wire. It is noticeable that the parking lamp ,or running light is very bright ,compaired to the turn signal when the light switch is off.How do you wire in a diode system.I've never done that,meaning I must wire around the light switch ? Thanks again,35olds

[docvette]

Doc here,

IF the filaments are isolated...you DO NOT need Diode isolation..(but it sounds to me like you have a system backfeed)

First , remove the bulbs..BE sure they are the correct lamps AND mate to the sockets.

Next, get a jumper wire from the battery that will reach all the way to the lamp housings..REMOVE the power wires from them..and apply power to them one wire at a time..The BRIGHT filament will be the Turnsignal ONLY..(no other system) The Lower or least bright filament will be the park and headlight markers ONLY..

BE sure they have no feedback between them through the lamp sockets.If the wires are not correct, correct them and try again. If they are correct,

Replace the flasher with a Heavy Duty Flasher and try again..

That should correct the problem.

Happy & Safe Labor Day!
Doc

[35olds]

35Olds here, Thank You,Doc ! I tried what you said ,with the wire coming from the battery to check the brightness of the filaments.I thought I'd tried that before but apparently not.Your methd was the best way,Now the turn signals are working as they are supposed to.Once again, thank you Doc for your time!,BOB

[docvette]

Doc Here,

Glad to hear you got it all straightened out!!

Thanks for posting back the fix! It will help others in future I'm Sure!

Doc