The stock circuit breaker for the heater fan is 25 amps. The upgrade is 30. Don't go any more than that. If the fan still cycles with the 30 you probably have "issues" with the wiring and/or the fan motor. As part of the relay upgrade kit the cooling fan circuit breaker also gets uprated from 35 to 40A. Again, if the fans cycle on the 40A breaker same things to look for. Refer to Parts Manual Group 3-7-4 Fig #'s 22 & 23 Notice that there are TWO # 22's. One is also used for the door locking module. It should be removed and a fuse used in it's place. I would use a 15 AMP fast-acting so if the stock locking module sticks the fuse will blow quickly before you melt your solenoids. With the fuse in place do not go testing the door locks on and off too many times too quickly. You will blow the fuse. As for cooling, it does get hot in that area! High ambient temperatures will derate ampacity. What this means is a 15 amp (or any size) fuse or circuit breaker will not carry it's rated capacity if it gets too hot because the area it is in is hot. Wires and connectors too! One tip is to remove the cover for the fuse holder. Keep it nearby, just not over the fuses where it can trap the air allowing all of the fuses to get hotter. Ait holes in the wood cover can help as can opening the wood cover and folding the carpet back. A tiny fan can't hurt either. You can get these circuit breakers and the whole kit from any of the vendors or you can go to an auto supply for just the circuit breakers. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, Farrar <fhudkins@...> wrote: > > Go to an electronic parts store and ask for a Type I circuit breaker. If > memory serves, the stock one is 40 amps, so shoot for 45 or 50. > > Good luck! > > Farrar Hudkins > #2613 (auto) > > > Kevin Abato wrote: > > > > > > I have this issue too. > > I replaced the fan a few years back but it still occurs. Where can I get > > that upgraded breaker? > ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/