Joe Tarver

Another way to operate tail lights separately is to use one function output to operate a miniature relay. It needs to have a 12v coil and be the DPDT type. Cut the wire to the tail light at each end, wiring each end through one changeover contact, and mapping the output onto the desired function button. If the contacts make with the relay operated, the lights will come on directionally, and if the contacts break then the loghts will go out. It's down to personal preference which you like. On my Bachman. Class 40, operating the function button turns the tail lights on, so the relay spends most of it time unenergised. Suitable relays come in tubes of 40 from Rapid Electronics - no connection other than as a satisfied customer.

Thanks. I already knew this and have tried both settings to no avail. It's a mystery as to why the Dapol decoder works the headcode lights and not the Zimo, UNLESS it's because both ends are connected together, and the Zimo outputs can't cope with two together. I haven't tested this theory yet by unplugging one end to see if the other end then lights up. I'm beginning to think in terms of disconnecting the headcode lights from the pcb and wiring them direct to normal function outputs via 1kOhm resistors.

Hello all. As a newby to this forum, you may have already gone round this circle many times, but I can't get the headcode lights to light on my DJModels class 71 with a Zimo MX634C decoder. It should have logic outputs in the right places, and Dapol Imperium works them fine but with lousy motor control on a down gradient. I've heard that the Lenz Silver 21+ has the 5th output at logic level, but that doesn't work either. Unless someone has cracked how to adjust the Dapol BEMF settings, it look like I can't have full lighting AND decent motor control.