If I'm correct, you probably shouldn't leave it connected that way any longer than necessary. With your key on "START", you get full voltage to your points. On "RUN" you get approx. 7 (?); that's the job of the resister that you are bypassing. But for this diagnosis 52Carl's suggestion is a good one.
~ Victor
1941 3/4-Ton Pickup (in process). Read about it
in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~
moved on to fellow Bolter 
