PJ-101

I was hoping that was the case - thanks!

Does anyone know whether Bachmann's 57XX Pannier tank Body - 32-217A will fit onto 32-208 (Class 8750 Pannier Tank 6757)? Many thanks

Just to confirm for anyone who finds this thread - the information which came back from the retailer was 'Dapol have told us that the decoder is a two function decoder and the factory have mislabeled the decoder as a 4 function'. Interesting that the Imperium 5 6 pin is still widely being advertised as four function!

I'm really a bit of a newbie re DCC and still finding my way, but a 6 pin 2 function, has 2 function outputs and an 8 pin 4 function, has 4 function outputs which all makes sense. I am aware that some chips have solder pads rather than wires to make up the additional function outputs, but the Dapol one does not. Also they sell a 6 Pin 2 function chip for a few pounds less, so I'm struggling to see how this one is any different if it only has 6 wires and no solder pads.

Thanks Ian. I have contacted the retailer to see whether they can help, although as you say, this is commonly advertised by a number of retailers so I feel like I need to get to the bottom of this one way or another. If it's misleading, Dapol will need to change the description.

Thanks Ian, that's very helpful as you say, someone else had exactly the same problem! Over a year later and it's still being sold as 'four function'. Dapol sales have not responded. I will be referring this to trading standards if Dapol ignore my email.

I have just purchased a Dapol Imperium 5 6 pin 4 function decoder which says 'Full instructions included inside' ......this is not true! I understandf the 6 pin wiring, 4 for the motor/pickups and two for lighting functions, usually directional, but I have no idea how to wire for the other 2 functions as it says 4 functions? I was looking to have a function for the front light, rear light and internal lighting, leaving one unused. There is a 2 function version of this chip, so the 4 functions must be accessible somehow. There are no solder tabs on the chip itself. Any ideas would be very much appreciated! Thanks.

Hi Andi, just a quick further reply to say thanks for the additional wiring diagram. I have now realised that this is a very neat solution to the problem, in fact, its the perfect solution in this situation! Could even be useful in other situations. Thanks again.

Yes I realise now that it should work fine, in actual fact rather a neat solution. Thanks for confirming though.

Thanks Andi. Is it not the case that voltage/current can get back to the chip via the 'closed' function ie both yellow and white (when only one is selected) and damage the chip? Apologies if this is a stupid question!

Thanks James, it's actually a OO scale conversion but virtually nowhere to hide the chip, hence need smallest possible. The second set of LED's is my default option, just seems like wiring two interior lighting circuits (4 leds per circuit, so not too onerous) means alot more interior wiring to hide, if the same result can be achieved with one circuit. Appreciate your input.

Hi Andi, thank you so much for your thoughts on this, particularly helpful circuit diagram. If you could do one for the simplified solution suggested above, that would be fantastic. The 6 pin chip does have a blue common return wire, so presume I can just use that rather than the red or black.

Thanks Iain, I did a mock up with diodes, it does work but there is still measurable voltage (I think it was around 2v) the wrong side of the diodes, they block most of the current/voltage but not all of it, so concern would be damage to the decoder, but the whole diode thing was stretching my electronics knowledge to the max!, so I'm not sure whether it's viable or whether I have to just accept that this arrangement wont work.

I think it can't be done, but just wondering if anyone knows better. 6 pin DCC 2 function chip. 1 function (white wire) for front light (directional), 1 function (yellow wire) for rear light (directional), but can interior lights be wired from both white and yellow? so the interior lights are on with the front headlight, then when the direction changes, the rear light comes on with the (same) interior lights, albeit that they probably turn off briefly during the directional change. It would mean that there's no independent control of the interior lights, just front light/interior or rear light/interior. Need a small 6 pin chip, not enough room for an 8 pin 4 function, but not too bothered about controlling them independently. The only alternative I can think of would be to have two separate interior light circuits (4 leds each), so one is wired to front and the other wired to come on with the rear. Just hoping to avoid lighting circuit duplication if possible. Comments welcome. Thanks.

thanks for all your thoughts on this, which Hornby bogie replacements would be the correct one's to use?