Electrical Please help electrical

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bolo413

New Member

Dec 6, 2009

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Apr 25, 2021

#1

• Apr 25, 2021

• #1

I have a 90 gt. When I start the car the turn signals come on solid, not very bright and the tach and gauges don’t work. While the car is running If I turn the key slightly to the start position again and hold it everything works and the turn signals go out. I have replace the ignition switch twice thinking I had a bad one. Can’t figure it out.

 

KRUISR

10 Year Member

Apr 16, 2015

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Apr 25, 2021

#2

• Apr 25, 2021

• #2

Turn signals on ... is this in the dash only or the front and rear lights as well.

If on the dash only, I would look at the cluster, the printed circuit, its grounds and connections.

 

B

bolo413

New Member

Dec 6, 2009

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Apr 25, 2021

#3

• Apr 25, 2021

• #3

It is the front and rear lights also. When I turn the key a little bit to the start they go out and gauges work fine. But when I let it go back to the run position they come back on and gauges go out.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

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polk county florida

Apr 25, 2021

#4

• Apr 25, 2021

• #4

Did you replace the e!ectrical switch or the key switch?

 

B

bolo413

New Member

Dec 6, 2009

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Apr 25, 2021

#5

• Apr 25, 2021

• #5

Ignition switch under steering column. Took switch off and engaged it with a screwdriver and it still does the same thing

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

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polk county florida

Apr 25, 2021

#6

• Apr 25, 2021

• #6

Where did you get the switch? What brand?

 

B

bolo413

New Member

Dec 6, 2009

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Apr 25, 2021

#7

• Apr 25, 2021

• #7

Got one from lmr and one from my local auto parts store.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

27,824

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polk county florida

Apr 25, 2021

#8

• Apr 25, 2021

• #8

Is the connector burnt, melted or discolored?
Fits tight?

 

B

bolo413

New Member

Dec 6, 2009

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Apr 25, 2021

#9

• Apr 25, 2021

• #9

No nothing burnt no smell of burnt. Yes fits tight.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

27,824

10,506

203

polk county florida

Apr 25, 2021

#10

• Apr 25, 2021

• #10

Not sure, from the description I'd say the electric switch but if you swapped in two new ones then I gotta tap out on this,

 

limp

wrap a little cheese around it and its a done

5 Year Member

Oct 4, 2020

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Florida

Apr 25, 2021

#11

• Apr 25, 2021

• #11

My experience is with older cars, but this sounds like a grounding problem to me

 

nickyb

I gotta say i never painted my nuts, Never Ever

15 Year Member

Apr 3, 2009

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nevada

Apr 25, 2021

#12

• Apr 25, 2021

• #12

You could try replacing the key switch, it maybe worn out.

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

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5,816

213

Apr 26, 2021

#13

• Apr 26, 2021

• #13

Make sure you have the correct turn signal switch for the year car. Also check those wires. Unplug the turn signal switch and see if the gauges start to work. The turn signal switch should be interrupting any power to the lights. The printed circuit on the back of the cluster could also be causing the problem. I don't have a wiring diagram in front of me but power may be able to be back fed through the circuit from the indicator bulb circuit.