Popular Post Derrico Posted Thursday at 11:46 PM Popular Post Share Posted Thursday at 11:46 PM I know that I intended to have an update a couple of weeks ago. I came down with a bad cold and it kept me away from the project for a while. Now I feel better and have some progress, here are some pictures. Next step will be working on the dump box. Somebody wired the truck, so it only starts. does anyone know if there is a major wire that controls all the electric? It seems to me that they disconnected a wire somewhere that controls the lights etc. Thanks for any help. Opps, looks like a some of pics are out of order. 7 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/ Share on other sites More sharing options...
tjc transport Posted Friday at 08:26 AM Share Posted Friday at 08:26 AM looking good!!! 1 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572213 Share on other sites More sharing options...
hicrop10 Posted Friday at 11:47 AM Share Posted Friday at 11:47 AM Keep up the good work,I’m doing my B87.Concerning the wires I believe the wiring diagram is on this site,if not let me know I have a blower up of it and I can send it to you. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572217 Share on other sites More sharing options...
Popular Post Freightrain Posted Friday at 12:41 PM Popular Post Share Posted Friday at 12:41 PM There should be a major hot wire at the S/P switch that feeds the dash area. I had converted mine to 12v start and I installed a solenoid where the S/P was and I attached that feed to it as a junction. 3 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572220 Share on other sites More sharing options...
mowerman Posted Friday at 05:27 PM Share Posted Friday at 05:27 PM wow nice work you been busy,,,bob 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572236 Share on other sites More sharing options...
Vladislav Posted Friday at 08:52 PM Share Posted Friday at 08:52 PM Fresh paint is sexy! Keep on going! 1 Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572248 Share on other sites More sharing options...
Derrico Posted Sunday at 02:26 PM Author Share Posted Sunday at 02:26 PM Hi Freightrain, this B20 has a 291-gas engine. I don't think it has the S/P switch. I may be wrong but believe there is a wire that does all the electrical that has been disconnected. Any help would be greatly appreciated. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572386 Share on other sites More sharing options...
mowerman Posted Sunday at 02:41 PM Share Posted Sunday at 02:41 PM I was actually thinking the same thing,,, no S.P .. it’s probably six volts also Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572387 Share on other sites More sharing options...
Derrico Posted Monday at 12:27 AM Author Share Posted Monday at 12:27 AM Hi Bob, yes, it is six-volt system. Any idea why it starts but the electric does not work? Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572461 Share on other sites More sharing options...
Joseph Cummings Posted Monday at 01:06 AM Share Posted Monday at 01:06 AM I don't think I ever saw a 6 volt B Model. Not even a 6 volt L cab that I can remember Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572464 Share on other sites More sharing options...
skydawg Posted Monday at 01:27 PM Share Posted Monday at 01:27 PM I didn`t know that S/P switches were ever used in gas engines.As for electrical,are the breaker panel contacts corroded or oxidized? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572480 Share on other sites More sharing options...
HarryS Posted Monday at 03:09 PM Share Posted Monday at 03:09 PM There should be a major electrical connection either at the starter or solenoid. It should go from there through the ammeter to the voltage regulator or maybe ignition system depending on how Mack did it. Hopefully you can find a wiring diagram for your model that shows the specifics. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572485 Share on other sites More sharing options...
mowerman Posted Monday at 03:49 PM Share Posted Monday at 03:49 PM yes, ordinary when everything quits it usually something very easy to fix and obvious good luck 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572488 Share on other sites More sharing options...
mowerman Posted Monday at 03:51 PM Share Posted Monday at 03:51 PM I would start looking for corrosion right at the ignition switch 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572489 Share on other sites More sharing options...
mattb73lt Posted yesterday at 01:03 AM Share Posted yesterday at 01:03 AM I believe the main feed comes off the firewall mounted foot starter switch. Reason is I left the switch in place on my B42 when I converted it to diesel and ran a feed from the 12V starter to power it. Used it like a terminal block. The 6V trucks were early production and were the lighter gas jobs. A friend has an early B42 that is 6V. It was a pristine oil truck out of New Haven when he got it years ago. Kept inside during it's working time. The factory paint was literally like new. Now it's a rusted, faded truck laying in his yard. What a waste. He's one of those, "I'm going to fix it one day." guys 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572557 Share on other sites More sharing options...
mowerman Posted yesterday at 03:15 PM Share Posted yesterday at 03:15 PM Oh man, that’s messed up. I’m starting to think that’s going to happen here. I waited too long to get started on this thing. I’ll never finish it. Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572569 Share on other sites More sharing options...
67RModel Posted yesterday at 03:53 PM Share Posted yesterday at 03:53 PM Nice thing about Reno though is stuff could last for decades out there and not rot away. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572571 Share on other sites More sharing options...
Freightrain Posted yesterday at 09:03 PM Share Posted yesterday at 09:03 PM 5 hours ago, mowerman said: Oh man, that’s messed up. I’m starting to think that’s going to happen here. I waited too long to get started on this thing. I’ll never finish it. You are retired AND the truck is in a garage. What's the hold up..... 😆 Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572598 Share on other sites More sharing options...
mowerman Posted yesterday at 09:09 PM Share Posted yesterday at 09:09 PM You know Larry for some reason when the sun‘s not shining I don’t feel like leaving the house and no I am running out of excuses way back when I was working on a truck tire shop at 17 years old a guy used to come in there and he told me that one time One way you were sitting in a lousy day just like I just said it when the sun‘s not shining young fella I don’t feel like doing anything one thing about retirement. I can always work on it tomorrow. But thanks for your foot in my ass I appreciate that. If nothing else, a huge guilty conscience you hear me ha ha 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572599 Share on other sites More sharing options...
mowerman Posted yesterday at 09:10 PM Share Posted yesterday at 09:10 PM 5 hours ago, 67RModel said: Nice thing about Reno though is stuff could last for decades out there and not rot away. Out here, I think the heat does more damage to anything in the summertime Quote Link to comment https://www.bigmacktrucks.com/topic/75334-update-on-the-b-model-restoration/#findComment-572600 Share on other sites More sharing options...
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