Guest PetePontiac Posted May 5, 2013 Share Posted May 5, 2013 Hi my 1938 Pontiac has under the dash 2 fuses attached to the light switch plate.according to my user's guide the # 1. fuse for all electrical units except left headlamp.# 2. fuse for left headlamp only.what amp fuses would I use for these ?what amp fuse would I use in my radio head ? thank for you help,, PETE Link to comment Share on other sites More sharing options...
Guest PetePontiac Posted May 17, 2013 Share Posted May 17, 2013 Well I was told it is 10 amp,,, FYI Pete. Link to comment Share on other sites More sharing options...
60FlatTop Posted May 17, 2013 Share Posted May 17, 2013 I would measure the resistance of the device, allowing for a minimum resistance in the wire, switch, and connector. Then plug it into old faithful E=IR where E=6 volts and R is your ohmic value. "I" will be your current (Intensity). Give it 30 to 40% overdraw and select the closest fuse available. It should be fine.Bernie Link to comment Share on other sites More sharing options...
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