 |
Pages: « ... 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 : All |
 |
|
Author |
Right - join Part A to Part B etc, etc, etc (currently 69,802 views) |
Graham Bichard |
Posted on: July 9th, 2022, 09:46:52 |
 |
|
Maximum Member2


Posts: 741
|
|
Craig, All, Looking at the circuit diagram I think I can 'extract' the info for only a second fan. But am I correct in thinking when comparing your diagram with what I've done, the relay pin 85 and 86 polarity is swapped around? That is - where I have a +ve feed, you've got a earth? Hope that makes sense. Cheers. |
|
|
 |
Reply: 585 - 590 |
|
 |
Graham Bichard |
Posted on: July 9th, 2022, 10:31:23 |
 |
|
Maximum Member2


Posts: 741
|
|
|
|
 |
Reply: 586 - 590 |
|
 |
Craig Smith |
Posted on: July 11th, 2022, 09:19:53 |
 |
|
Big Member


Location: Bury Posts: 254
|
|
|
Quoted from Graham Bichard, posted July 9th, 2022, 09:46:52 at here |
|
Craig, All, But am I correct in thinking when comparing your diagram with what I've done, the relay pin 85 and 86 polarity is swapped around? That is - where I have a +ve feed, you've got a earth? Hope that makes sense. Cheers.
|
|
Ordinarily the way that you wire pins 85 & 86 would make no difference to its operation (though 85 is commonly referenced as "coil ground"). However, the relay that you have chosen has an internal diode across pins 85 & 86, and therefore would have to be wired as per my diagram with 85 going to earth. Alternatively you could go for a relay without a diode: CBS part number 140201 and wire it as per your diagram.
All that you are doing with 85 & 86 is energising a coil, and it makes no difference which way the current flows with a non diode fitted unit.
Other items all look fine. |
|
|
 |
Reply: 587 - 590 |
|
 |
Graham Bichard |
Posted on: July 16th, 2022, 14:04:46 |
 |
|
Maximum Member2


Posts: 741
|
|
Thanks Craig. I didn't realise I'd selected a relay with a diode - no need for that I think. So I'll look to keep it simple (of course) and get the bits ordered. Cheers. |
|
|
 |
Reply: 588 - 590 |
|
 |
Graham Bichard |
Posted on: July 23rd, 2022, 14:47:01 |
 |
|
Maximum Member2


Posts: 741
|
|
Received through the post this week:
 Relay & holder, plenty of black & red 17.5Amp cable (I did think about trying to match the MPi loom wire colours, but I'll be marking these cables up with a tag so this was an easier option), plenty of spare connectors. I purchased the maxi fuse size inline fuse holder as it was only a few quid - I haven't as yet been able to locate a regular size blade fuse inline holder rated at 15A as yet, but will keep looking (until such time as I do the wiring) as it will be more convenient only carrying one size (not rating) of spare fuse. I bought the switch from RS (along with some cable covering to try and make it look like a 'proper job')- I think it'll be okay (for IVA), the edge profile being similar to the other rectangular rocker switches, but I might hide it away under the dash for the test and mount it correctly on the dash afterwards.
Re-reading Mr Dickens book, he mentions he prefers not to wire the fan through the ignition (albeit he controls the fan with a temperature switch). I'm tempted - in the name of simplicity in my case, to revisit whether I wire the fan directly i.e. leave out the ignition switch.
Also received the mounting feet for the second fan, which I'd forgotten to order with the fan! |
|
|
 |
Reply: 589 - 590 |
|
 |
Graham Bichard |
Posted on: July 23rd, 2022, 15:41:18 |
 |
|
Maximum Member2


Posts: 741
|
|
Okay - so after a bit of reassurance here please. This is a photo of my starter motor area, in particular the red +ve connection. (Not the clearest of photo's I'm afraid)
 Am I correct in thinking it is from here that I take the power to connect to the Relay (connection '30')? Thank you. |
|
|
 |
Reply: 590 - 590 |
|
 |
Pages: « ... 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 : All |
 |
|
|
Forum Rules |
You may not post new threads You may not post replies You may not post polls You may not post attachments
|
HTML is on Blah Code is on Smilies are on
|
|
|
|