Check that the lamp is earthed to the body - the electricity has to go through there.
Next check that the switch on the transmission is working by placing the g/box in reverse and gauging the resistance between the terminals.
Wiggle the gear lever a bit and see if the continutiy remains OK (OHMS should be near "0" )
Check that power is actually getting to the switch and at the other side of it.
Check the bulb and the bulb holder for corrosion and good grounding (also, make sure the bulb actually works by putting 12 volts through it and observing it glow!)
If electricity can get to the bulb and it is in a circuit with the battery then it should go.
Electrical Problem driving me crazy
Hey there! I am new to your forum, as of yesterday anyway, but have used this site for some time. I wanted to put a question to the experts about my problem though. I have a 1973 GT that has an electrical problem involving the turn siginals. When you...
I've noticed for years that the GT does not use the front side markers for dual purpose marker and turn signal. Most modern cars have the turn signals very visible from not only the front but the sides. Given our GTs only have the little round lights under the bumper for this purpose, it leads...
I recently realized why my center bulbs never illuminated: It's missing the brights relay.
Does anyone know the part number? Is it even available?
If not, if there is a replacement part available? If yes, what's THAT p/n?
Fixing the duel turn siginal problem once and for all
Ok I struggled with this for a while and read alot of articles. The easiest fix is to rerout the ground from the flasher unit. Unlike the bright liht indicator the bulbs for the flashers ground themselves through the flasher unit. When...
The 4-prong turn signal flasher used in the Opel is a bit scarce but they are out there. This is the same flasher used by VW and Porsche in the late 1960s-early '70s. OGTS has a conversion to a 3-prong flasher that requires modification to the existing wiring, but if simple replacement is...