67 GTX Dim Exterior Lights

[Big9crab]

Have been going thru and cleaning up ground connections to improve dim headlights, taillights and rear turn signals. Have made progress in finding grounds for the headlights and have made brighter lights, however, been having trouble finding ground connections for the rear end. Have cleaned the light clips and the sockets that they go in, only minimal success. Tried LED's (not too successful) bought "upgraded bright" standard 1157 bulbs and it has helped, but looking for tips on grounds that I may be over looking.

 

[pnora]

Maybe you should back probe the sockets and get a voltage reading. You could also run a ground direct from the battery to a bulb socket or wire and see what changes.

 

[65CopCar]

You need to start measuring for voltage drops.

You are not very far from me..........

 

[Dave6T4]

I have used 2357 bulbs as replacements for 1157's. They are brighter.

 

[R413]

Taillights ground to the body with the mounting nuts. The factory nuts have barbed washers to get a good ground. Just jumper a ground to the rear sockets and see of lights get brighter.

But the real question is are you doing this with engine off?
Testing lights with engine off battery can go to low 12's or high 11 volts, not very good.

A running engine will have 14-14.5 volts going down the road above idle speed.

 

[Big9crab]

Maybe you should back probe the sockets and get a voltage reading. You could also run a ground direct from the battery to a bulb socket or wire and see what changes.

Thanks for info, I will try this.

 

[Big9crab]

You need to start measuring for voltage drops.

You are not very far from me..........

Thanks, I will do this.