Question about 1966 Ford Mustang
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Posted on Jan 02, 2017
SOURCE: Headlight and dash lights
Found this on a Kia forum. Sounds like it could be useful here.
"OK my dash and marker lights were out because the DRL module had failed.
I bet this is a fairly common problem so...before you go spending big bucks on a new one or even a few on a used one, why not see if the one you have is salvageable?
The Daytime Running Light module is located with other modules on a plate bolted to the driver's side kick panel. It's the biggest, black one and has DRL Module labeled right on it.
Because this is the module that produces the most heat and therefore is the most likely to fail, the motherless dogs who designed the 2002 Rio put it on the left side of the plate so that you have to move a harness and unbolt the plate to get at it. If you've got big shoulders and arms, getting the plate off is going to hurt. If you're left-handed, you're screwed.
Once you've got the module out and have had your crushed ribs bandaged, which were crushed while laying over the door sill to get under the dash, you pop off the module cover and check the solder side of the circuit board for bad solder joints around the main relay connections (that's the big white block on the board).
They run a fair amount of wattage through the relay, so it gets hot when it's on and cools when it shuts down. Over time this crystallizes the solder and forms a circular crack around the connection that gets bigger until it's essentially no longer connected to the circuit board and all your dash and marker lights go dark.
The motherless dog who designed the circuit could have avoided this by using a relay with a higher wattage rating (which would be bigger, making the module larger, but would run a lot cooler), but then we wouldn't have an expensive, consumable part to have replaced by the dealership would we.
Anyway, check the module for any burned components. If everything else looks OK, re-solder the connections (or have a friend who really knows how to properly solder electronic circuits do it otherwise you'll just finish what inadequate design started), pop the module back together, plug it in, test the lights and if working, reinstall it and the mounting plate - and for the love of God put a thick pillow on the door sill this time to protect your bruised ribs.
Hope this proves helpful. It's actually a real easy fix."
Posted on Sep 03, 2008
SOURCE: dash lights not working.
Before we start a lot of indepth diagnosis, would you please check to see if the dash light control is turned all of the way up? This is a small round knob, lower left of the instrument panel.
Posted on Oct 06, 2008
This is a problewm I have been researching. On the 91 Loyale
there are two headlight relays. The relay for the left headlight
also controls the instrument lights and the running lights. If
the right relay is working and the left is not, the left headlight will
be dim because of a back electrical path through the high beam
indicator light on the dash, but the instrument and running lights will
be out. I have been trying to find out where Subaru put these
relays, but three Subaru service departments have been no help.
One dealer's service department told me to remove the large bezel
around the instrument panel. I did and the relays weren't
there. Lots of luck.
Posted on Aug 19, 2009
Check all the bulbs at tail end for parking and brakes, test grounds and harness for trailer. Check fuses. clean batery terminals, Re instal head light swich properly and make sure all wires conect.
Posted on Sep 09, 2009
Testimonial: "thank you for quick response will try all of your suggestions will re post if no luck."
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