Jim S

Thank you all for your comments. Found out that these timing light pickup sensors are directional! There is an arrow moulded into the plastic that should point to the plug. That improved its operation. The six plug leads are connected to the right plugs and the coil was changed. There is 12v at the coil. Have since replaced the distributor condenser and it was better. Then stripped the carb, replaced the diaphragm, refitted and it was better still! Still spits back a bit if the throttle is opened a lot but it made our local steam rally last weekend and back, a distance of about 15 miles each way, plus round the ring twice - it looked smart! Beginning to think that this engine is a bit touchy and needs a lot of fine tweeking to get the best. Thanks all, Jim.

Hello all. Helping a friend with his newly restored MW but can't get the engine to run properly. It has been rebuilt, new rings, big ends etc. but won't run properly. It spits back through the carb and backfires if it is revved up slightly. Doesn't really run all that smooth on tickover either. We are running out of ideas. Checked the following: valve clearances, static timing, points gap, plug gaps. Changed the following: plugs, new copper plug leads, new coil, new rotor arm, new dissy cap, new condenser, nos carburettor. Tested: 12v to the coil with ign ON. There are no suppressor components in the plug leads. Noticed that using a Sealy timing light that it does not flash consistently, if at all, on all plug leads pointing to weak spark. (Timing light works perfectly O/K on my 6v system TE20 grey fergy using a 12v supply for the light).. Any guidance please.... Regarda Jim.

Thank you Richard and Danny for that info. As this one still had the diff/convoy lamp still fitted on a bracket, I wonder if, after Richard's reply, whether it was an MOD retro fit. Then the JB and switch (if fitted) could possibly have been wherever the fitter could get his drill easily?? Perhaps it would be fitting to attach the components as shown in fig.3 previously posted above? Now for another query concerning the sidelight cable routing under the front wings. As there are no grommet holes in the chassis to route the sidelight harness through to the clips in the wing support, did it just 'dangle' out under the chassis on its way from JB to sidelight? Regards Jim.

Southern England.

Thanks all for the info. Had a look at the MWD today and there is no signs of fixing or grommet holes in that area of the chassis. So wonder if there never was a jb and switch or it was located elsewhere on this one. It is a 1940 aeroscreen vehicle. Jim.

Thank you Andy. That figure shows all. When I next see the vehicle I will look for fixing holes in the crossmember. Fortunately the diff light survived and was still there on its bracket! Thank you again, Jim.

Thank you Wally. Narrowed down at last! Would you, or anybody else, have a photo of it in situ so we know what the switch and fixing bracket, if there is one, looks like and the size of the JB? Thanks, Jim.

Hello all. I am rewiring an aeroscreen Bedford MWD. The wiring diagram shows the Stop, Tail and Diff light wiring with a JB and a switch to switch between diff and stop/tail lights. Does anybody have details of where these two components were located? A photo would help. I want to leave enough spare wires in the right place so that they, on presumably a bracket on the chassis somewhere, can be fitted in the future if we can find the bits. Thanks in advance, Jim.

Thank you Tony. I'm afraid I am already hooked. There are on my drive my three grey fergies, a standard width, a narrow and a vineyard!! All TVO. In the garage is my MGBGT so the poor family Volvo is parked on the road at the moment. Oh, I almost forgot, there are two series 3 landrovers in a shed awaiting attention!!! Oh dear, what are we all like??? Jim.

I'm Jim. I am in the middle of helping a friend rewire his Bedford MW. We are progressing well with him on the mechanical/rebuild side and me with the electrics. (I think I have the easier task). But he will be proud of it when finished. We have a query with the diff lamp wiring but I will create a post in the vehicles area with details. Best wishes all, Jim.