New ST Express blowing light fuse

gpshemi · 08-08-2011, 08:30 AM

Any thoughts? It was a 15 amp fuse. Was working fine. Stopped to make an errand, got back on and no lights. Checked the fuse and it was blown. Replaced with a 20A, since it was the only thing I could find, and it worked the rest of the weekend. If the lights are 55 watts, that's about 9A there. Then add in the tail lights...and is 15A too low?

Should I be worried there's an issue?

gpshemi · 08-11-2011, 07:28 AM

No love eh?

jeffrun · 08-11-2011, 10:27 PM

i have the same wattage, i use 25A, which covers headlights,tail light,relay and some dash lights

gpshemi · 08-12-2011, 07:12 AM

AWESOME! Thank you so much. We're headed back to the resort this weekend and I was wondering if I'd make it again with it. 15A seemed low to me. I'm sure the wiring can handle more then that anyway.

kgsc · 08-12-2011, 08:57 AM

In my opinion, 15a is too small. I believe you are correct with the head lights being around 9 amps. The tails with an 1157 bulb are close to 30w each so 5 amps there. Not sure what gauge wire you have but I think the factory wiring is min 14g which is good for 15 amps or close to that. I would put a 20 in it and ride..

gpshemi · 08-12-2011, 09:14 AM

So that's 170watts with just headlights and tail lights - 14.1 amps. Add in circuit resistance (wire, relay, connectors, any splices, ect) and you're borderline at best. Wonder why the factory put a 15A in there? Well...I don't think 20A is going to melt down 14g...so my 20A fix should work.

Thanks again.

kgsc · 08-12-2011, 12:08 PM

Probably built on a Friday :)

gpshemi · 08-12-2011, 01:27 PM

Oh don't say that. Too much money into this thing for that kinda work...

08-08-2011, 08:30 AM	#1
gpshemi Getting Wild Join Date: May 2009 Location: Michigan Posts: 108	New ST Express blowing light fuse Any thoughts? It was a 15 amp fuse. Was working fine. Stopped to make an errand, got back on and no lights. Checked the fuse and it was blown. Replaced with a 20A, since it was the only thing I could find, and it worked the rest of the weekend. If the lights are 55 watts, that's about 9A there. Then add in the tail lights...and is 15A too low? Should I be worried there's an issue?

08-11-2011, 07:28 AM	#2
gpshemi Getting Wild Join Date: May 2009 Location: Michigan Posts: 108	Re: New ST Express blowing light fuse No love eh?

08-11-2011, 10:27 PM	#3
jeffrun Gone Wild Join Date: Apr 2011 Location: Washington State Posts: 385	Re: New ST Express blowing light fuse i have the same wattage, i use 25A, which covers headlights,tail light,relay and some dash lights

08-12-2011, 07:12 AM	#4
gpshemi Getting Wild Join Date: May 2009 Location: Michigan Posts: 108	Re: New ST Express blowing light fuse AWESOME! Thank you so much. We're headed back to the resort this weekend and I was wondering if I'd make it again with it. 15A seemed low to me. I'm sure the wiring can handle more then that anyway.

08-12-2011, 08:57 AM	#5
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,146	Re: New ST Express blowing light fuse In my opinion, 15a is too small. I believe you are correct with the head lights being around 9 amps. The tails with an 1157 bulb are close to 30w each so 5 amps there. Not sure what gauge wire you have but I think the factory wiring is min 14g which is good for 15 amps or close to that. I would put a 20 in it and ride..

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08-12-2011, 09:14 AM	#6
gpshemi Getting Wild Join Date: May 2009 Location: Michigan Posts: 108	Re: New ST Express blowing light fuse So that's 170watts with just headlights and tail lights - 14.1 amps. Add in circuit resistance (wire, relay, connectors, any splices, ect) and you're borderline at best. Wonder why the factory put a 15A in there? Well...I don't think 20A is going to melt down 14g...so my 20A fix should work. Thanks again.

08-12-2011, 12:08 PM	#7
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,146	Re: New ST Express blowing light fuse Probably built on a Friday :)

08-12-2011, 01:27 PM	#8
gpshemi Getting Wild Join Date: May 2009 Location: Michigan Posts: 108	Re: New ST Express blowing light fuse Oh don't say that. Too much money into this thing for that kinda work...

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