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74m35a2 that idea is way simpler......thank you. I will post pics when we are complete. V/r

74m35a2 hi bro, me again. what do you think of the idea of us just running from the alt straight to the batteries? and would it be as simple as (2) wires hot and ground. do you foresee any issue with this idea? V/r

74m35a2 hi bro, thank you again for the help! we will follow up with anything we may find, V/r

74m35a2 and kaiserm109 guys, ok here we go! RESULTS OF YOUR RECOMMENDED TESTING kaiserm109 - borrowed another dvm, verified that possible variable....no issues. but through out this testing we used all 3 ..ha-ha 74m35a2 -re-verified all wires iaw the tech man electrical dwg and all my wires...

74m35a2 and kaiserm109 thank you for the replies.... I will definitely follow up with results on Thursday to both of you!......... and with some possible pics V/r

superman 1) here are some pics, the battery well is kind of hard to make out. up at the alt you can see that the 2 small wires are no longer hooked up. as the unit is self exciting. 2) also, since we last emailed you we have been busy troubleshooting this issue. see if this makes any sense to...

superman got it .... we are taking pics and will post soon v/r

suprman thanks for the reply. we did use 2 different dvm's. (at some point we questioned them too) that regulator sensing wire you refer to, do you mean the actual hot wire to the alt from the battery? the reason I ask is on the new 21si we only hooked up the ground and the hot wire. the...

All we finally decided to post a thread concerning our issue, keep in mind we have been at this very intensely for over 2 weeks...we now need all opinions both main stream and off the wall! ISSUE -the main issue is that my voltmeter on the dash is reading mid yellow to mid red and jumping...

74m35a2 holy crap! it even says on the papers with it that it was tested prior to shipping out and has "NEW DELCO" on the sales receipt too. but not on the unit. thanks again for all the assistance . I will follow up with this when I get it resolved V/r

74m35a2 and Manders thank you both for the responses and support on this little venture! my install went well except for this little electrical issue, I will get to the bottom of it. but for now I added some pics for you guys hopefully I can contribute back to others who do this. if I missed...

74m35a thanks again for the replies! I got the 21si alternator from spidermarine. it is 2 wire and I have 2 hooked to it.... a ground and one directly from the battery hot the other 2 are for indications only per them. as soon as I get home from work I will do your recommended actions and...

guys I did my install and it is awesome....but I still have the problem that prompted me to do this install. when the engine is running at idle the voltmeter on the dash is in the high yellow range and when I increase the idle it can go all the way into the red and then the meter starts to...

74m35a2 thanks again for the reply! I got to the bottom of it, when I called them twice this morning they asked me to call back because they couldn't find the pulley data. so about and hour later I get a call from them and it was the actual service guy and he promptly said we got the pulley...

All ok I called spidermarine and I gave them the above pulley data and they still cant find it. does anyone have the latest part # for the 8 groove serp pulley for the 21si that you can provide for me? thanks to all

74m35a2 thank you also for the reply and the recommendations , I already checked batteries they are good along with other basic simple check first items. Was it your posting about the part # ?. I referenced you in the above discussion, I had written the # down but not your name, but that...

manders thank you again for the reply! I think it looks great by the way! I cant wait to do mine, burning up my second alt after just 1000 miles was the icing on the cake to do this mod too! V/r

thank you for the reply. I will post some pics when I am completed. I found another posting that gave a good part # for another alternator mount that will accept the 21si. i am going to give it a try too. I called my local Cummins dealer and gave them the number and they had to order it from...

all I have just burned up my second military 60 amp alternator. I am ordering my new 21si tomorrow , so just for my clarification of the above posts, the 2 small wires don't need to be hooked up? only the pos and neg need hooked up. if I am incorrect here, any and all input would be greatly...

everybody, this was our first time here and we thoroughly enjoyed it! Aaron, you are a fine host bro! (the port-potty's are a big hit...ha-ha). and a special thanks to red rocket and her other biker friend for the side car rides....wow that was fun (she said I was number 621 for the amount of...