Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Bill Williams' relay wiring instructions are now on-line...


Guest Anonymous

Recommended Posts

Guest Anonymous

Dont want to re-invent the whell, but as my job is to build/invent electronic gismos for automotive application, my actual experience claims that the more crimp connectors you add to your circuit, the more problems you can have. There is ALWAYS a power loss into an unsoldered connection, the power loss build up heat and then starts to destroy the connector or wire insulator, no matter how good you think you have crimped it. Far more if there is a lot of curent feed into the connection. When doing a connection with connectors like on the picture, you have 3 power loss locations: where the wires are crimped (2) and the connection itself. Even if it is minimal, over the time the wire get loose into the connector because of thermal cycling and then starts the problems. Think at our stock 02 wiring: it always fails where there is a stupid crimp connector.

I would like to show you pictures of claims from customers that theirs cars catched on fire, because of an improper remote starter installation, as an example.

So my conclusion is: crimp connectors works ok, soldered wires works flawlessly.

Pat Allen

Link to comment
Share on other sites

Guest Anonymous

that is interesting. to paraphrase the motec efi installation manual - don't solder unless for last resort. If you solder, the solder joint must be supported to avoid flexing and excessive vibration.

Their philosophy is soldering makes a stress point that will cause failure while a high quality crimp connection is not nearlly as prone to this.

Link to comment
Share on other sites

Guest Anonymous

CONNECTIONS. (Second: power supplies.) The arguments for crimping and soldering are both correct. Crimping provides mechanical strength; soldering provides good conductivity. Hand-crimped connections are generally weak, because they are done with cheap hand tools that don't apply enough pressure over enough area. Factory-crimped connections, as you would find in an OE harness, are much better; they are done by calibrated machines. Joints that depend on solder for mechanical strength fail quickly under vibration. For the best, most durable connections on cars: 1) crimp; 2) solder; 3) insulate with shrink-wrap tubing.

Link to comment
Share on other sites

Guest Anonymous

on66.jpg

URL: http://www.bmw2002faq.com/store/index.html

jaw... this is especially important with cheaper non-soldered crimp connectors. that way, when you crimp the connector, the ends of the "tube" roll in there come around and crush the wire evenly, instead of just flattening the "tube" with the seam at one edge of the crushed assembly... i hope this makes sense. the seam-at-the-end (or edge) configuration tends to loosen up and allow the wire to slip out much more easily.

if the joint will be in the weather, i also heat shrink. soldering is fun and all, but crimping is just faster and easier.

-Rob

Link to comment
Share on other sites

Guest Anonymous

standard.jpg

from Waytek wiring. about 24 bucks.... my BMW Mechanic buddy has has his "favorite crimpers" for 10 years and the name, etc worn off years ago. I found them new on the Waytek site, bought some for me and will get him a new pair. They really apply a uniform and perfect crimp for your connection. I always shrink tube connections, do not solder though. The crimpers you get at any store are not good enough. You can use these up to 8 gauge. After that, you need to get into battery cable punch stuff: too thick. Good point about benefits of solder. i really should drip some into the connection, .... hmmm may try that with next round of wire updating.

Link to comment
Share on other sites

Guest Anonymous

stress and then eventually causes the wire to break. This is especially true when there is vibration present. All aircraft use crimp connecters

john

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...