Fitting Decoders into a Bachmann Class 108 - Help!!!

See here:-

Well managed to fit the decoder in the Motor car and it runs fine, however the lights dont work anymore!! any advice?

JC

kim wrote:

I read there was a second decoder socket in the trailer car.

(kim)

Then you would have also read that their are no jumper wires between the cars so each has to work on its own decoder. The lights on the motor car need three accessory outputs. Trace the wires and make sure that they are connected to the correct pins on the decoder socket. The decoder blue wire is the positive common and needs to go the the positive side of all the lights. (you can use a 9V battery to check which way round the LEDs are connected). The white and yellow decoder wires are for the head and tail lights and go to the negative side of the yellow and red LEDs. The negative side of the headcode/interior light needs to be connected to the remaining accessory wire, probably green. Make sure there is a resistor in series with each LED, the head and tail lights could have a common resistor as they don't come on at the same time. A decoder in the trailer car should be connected the same way or you can fit a small 4 pin plug and socket and run the blue, white, yellow and green wires through from the motor car. Keith

JC

Sounds like the chip (plug) is the wrong way around. Try turning it 180 degrees and testing then ? The way the pins are set is a fail safe for the lights. Motor works, but the lights wont as it is trying to feed the power in reverse (I.E negative is going to the positive side of the lights)