Use the waterproof heatshrink! It's a snowmobile, so they will be getting = wet and possibly exposed to road salts. Otherwise you will be repairing th= is again and again until you have cut all the wire back to nothing. If you= must go against this advice, crimp them and use a little bulb grease. Sol= dering will cause galvanic corrosion. Cheers, Robert Sent from my iPad > On Apr 28, 2015, at 11:28 AM, Harrison Cooper wrote: >=20 > For me, I would butt splice them, and then put water proof heat shrink tu= bing over each connection. Why? Splicing is easy to repair, I don't prefer= to solder wire to wire unless its just for a test. It seems you end up me= lting more insulation and still question if the solder was completely bond= ing to all the wires. >=20 > Also you NEVER want to tin wires that are clamped and crimped. The reaso= n behind this is that over time and temperature fluctuations, they will bec= ome loose and end up causing opens, pulling more current and eventually cou= ld be damaged (melt). I've seen this before. Putting paste to prevent oxi= dizing is generally done only with diss-similar metals...ie....bonding Al w= ire to a copper stud. Tin to Tin et al, you shouldn't need that. >=20 > -----Original Message----- > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf = Of Charles Craft > Sent: Monday, April 27, 2015 6:45 PM > To: PIClist > Subject: [EE] Butt splice vs solder >=20 > I think I asked this a couple years ago. > Just getting around to the project now. :-) I'm the not so proud owner of= a Polaris ATV with a bad wiring harness. >=20 > Butt splice or solder to repair broken wires? > If butt splice, tin wires first? > If butt splice, treat wires with "conductive paste to reduce/prevent oxid= ation"? >=20 > I think last time around someone mentioned there was a mil-spec or aircra= ft spec that said to use mechanical splices. >=20 > thanks > chuckc >=20 >=20 >=20 >=20 > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/cha= nge your membership options at http://mailman.mit.edu/mailman/listinfo/picl= ist >=20 > ________________________________ >=20 > PLEASE NOTE: The information contained in this electronic mail message is= intended only for the use of the designated recipient(s) named above. If t= he reader of this message is not the intended recipient, you are hereby not= ified that you have received this message in error and that any review, dis= semination, distribution, or copying of this message is strictly prohibited= .. If you have received this communication in error, please notify the sende= r by telephone or e-mail (as shown above) immediately and destroy any and a= ll copies of this message in your possession (whether hard copies or electr= onically stored copies). >=20 >=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .