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| Replacement relay hunt http://ducatipaso.org/forum/viewtopic.php?f=3&t=8202 |
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| Author: | BillB01 [ Sun Nov 03, 2019 9:31 pm ] |
| Post subject: | Replacement relay hunt |
The two major ignition and fuel injection relays on my bike are flaky. I see recommendation here for a replacement relay as part R1377, but I can't see how that would work. It's a changeover relay (we need double output) and it's type B pin configuration (we need type A). A bosch double output relay is readily available, but it's type B. I can't seem to locate a type A anywhere. A type B would require rewiring the plug. |
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| Author: | BillB01 [ Mon Nov 04, 2019 9:47 pm ] | |||
| Post subject: | Re: Replacement relay hunt | |||
For example, here is a type B double output relay. These are often called double make and break. If you look at the bottom pin configuration, you would need to swap the wires to pins 30 and 86 Bosch Automotive 0332019151 Relay is type B
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| Author: | Derek [ Tue Nov 05, 2019 7:17 pm ] |
| Post subject: | Re: Replacement relay hunt |
I haven't pulled them out to have a look but the diagram shows 4 pin on/off relays, not changeover. There is no pin 87a on the diagram. If the ones fitted to the bike have it it is redundant. When I need to replace the relays, if I need to I'll quite happily swap round the socket terminals. It is very easy to do and if you damage one new terminals are readily available. |
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| Author: | BillB01 [ Tue Nov 05, 2019 9:15 pm ] |
| Post subject: | Re: Replacement relay hunt |
Right, there is no 87A. The relays have two 87 outputs, Normally Open. All 5 pins are wired. Sure, I could swap wire 30 for 86 on the plug and get a Type B 5 pin dual output and be done with it. That looks like the easiest option at the moment with no 5 pn Type A relays available, as far as I can see. Oh, well. I appreciate the input. Update: I opened up the relays again and cleaned the contacts a bit more (using a business card). Everything works reliably now. Bike starts and runs fine. Woohooh! |
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| Author: | Derek [ Wed Nov 06, 2019 10:07 am ] |
| Post subject: | Re: Replacement relay hunt |
Good to hear that you've got the bike running again 
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| Author: | BillB01 [ Wed Nov 06, 2019 11:34 am ] |
| Post subject: | Re: Replacement relay hunt |
Yes, after replacing a starter that didn't need replacing because I refused to believe the 6 month old battery was failing, I am finally at peace again. The relays coincidentally started flaking out. I was getting ready to pull the ignition switch and check that --- all for the want of a battery. All better now except for my headache. 
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| Author: | Derek [ Wed Nov 06, 2019 7:05 pm ] |
| Post subject: | Re: Replacement relay hunt |
When you have the time and feel like it it's a good idea to do the wiring mod and fit a relay to take the load off the ignition switch. I wondered why all the lights including the headlight on mine went dim..bright..dim..bright in time with the flashers. On investigation I found that it was dropping more than 0.5V across the ignition switch. The relay mod cured this and improved the lights. |
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| Author: | BillB01 [ Thu Nov 07, 2019 5:43 am ] |
| Post subject: | Re: Replacement relay hunt |
Will do. Thanks. |
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