99 daytona 955i relay type A or B - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 19 (permalink) Old 10-16-2019, 02:21 AM Thread Starter
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99 daytona 955i relay type A or B

So I have a 99 daytona 955i I noticed it has random branded relays and I have a very bad battery drain when I leave my high beams on with ignition off I still have power on the bulbs 4v to be exact. I did some reading online that says something about 4 pin and 5 pin relays having the pin 30 and 85/86 flipped causing issues. I have a Haynes manuel but found nothing on relays or the order they go in. Anyone know what uses the 4 and what uses 5 pin. It's been a pain . I also have no start when hot issue I'm hoping one of the relays is bad to fix this.
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post #2 of 19 (permalink) Old 10-16-2019, 02:22 AM Thread Starter
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And I seen that someone pointed out the 4 or 5 pin relays being type A or B very confusing
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post #3 of 19 (permalink) Old 10-16-2019, 12:50 PM
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It's not a question of 4 or 5 pin for the hi and low relays - the 5 pin is required for the starter-headlight-cut relay position - it is type 'B'
The two headlight relays would be 4 pin - and on your 99 they would be type 'A' (these are the ONLY positions which are type A)
If 'typical' after-market (type B) relays are used in either of those positions, then indeed they would drain the battery even though the ignition is off and the lights themselves appear to be off - otherwise they will 'appear' to function normally. This is because the coil is supposed to be fed by ignition power, while the common pole is fed from battery power; when you put the wrong relay in, constant power feeds the relay coil, however the light will be off until you turn on ignition - so it seems normal except for fact that headlight relay remain energized when you turn off ignition, but lights are off because now ignition power is supplying the common pole.

Simple test - leave ignition off and pull the relay - if wrong type you should hear it click off as you remove it & click back on when you replace it again.

These happen to be 5 pin - the convention for 4 pin is identical other than omission of the centre 87a terminal. Note that the 30 & 86 terminals are transposed between the two types.
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post #4 of 19 (permalink) Old 10-16-2019, 11:57 PM Thread Starter
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I went out to buy three new type A relays and plugged them in. my fuse kept blowing soon as I plugged in a relay. For the headlights. I noticed the signal fuse and rh light fuse are bridged by a wire and that I have headlight juice when all 3 relays are off completely I cut the wire and plugged in relays and it works but no high beam . Haven't had luck finding a diagram that shows what pin goes where I think the plug might have the pins reconfigured as far as the fuel pump and ecu. Fan relay they are 5 pin type B relays. That should be good right
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post #5 of 19 (permalink) Old 10-17-2019, 01:55 AM
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Quote:
Originally Posted by Onyx0621 View Post
I went out to buy three new type A relays and plugged them in .... I cut the wire and plugged in relays and it works but no high beam .
Quote:
Originally Posted by DEcosse View Post
the 5 pin is required for the starter-headlight-cut relay position - it is type 'B'
The two headlight relays would be 4 pin - and on your 99 they would be type 'A' (these are the ONLY positions which are type A)
^This ..............

As per my original reply the headlight-cut relay MUST be type B and MUST be 5 pin - if you have a 4-pin relay of any description in that socket then the headlights will be off no matter what else you do
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post #6 of 19 (permalink) Old 10-17-2019, 08:21 PM Thread Starter
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I didn't have any luck finding that type A relay I did find these at the junk yard tho off a bmw I got 3 of them
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post #7 of 19 (permalink) Old 10-17-2019, 08:22 PM Thread Starter
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And you said must b type B unless it's the 99 daytona which uses type A correct or did I get it all wrong
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post #8 of 19 (permalink) Old 10-17-2019, 08:39 PM
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He said the Headlight Cutoff relay is a 5 Pin, Type B. The other two headlight relays are 4 Pin, Type A. Only these two are Type A for your bike.
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post #9 of 19 (permalink) Old 10-17-2019, 10:15 PM Thread Starter
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Ahhhhhh ok! I got it. I should be able to use type A with 5 pin on 4 pin slot ?
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post #10 of 19 (permalink) Old 10-18-2019, 02:29 AM
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Quote:
Originally Posted by Onyx0621 View Post
... I should be able to use type A with 5 pin on 4 pin slot ?
correct
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