Overdrive relay

MikeWA
MikeWA Senior Contributor
edited November -1 in HUDSON
Anybody have a part no. (preferably NAPA) for the overdrive relay for a stepdown, if such a thing is still available? Thanks- Mike

Comments

  • Mike,

    Fifth Ave. Auto parts Ph. 785-632-3450 have the overdrive relay for $68, also kick down switch for $38, and last but not least the Borg Warner Overdrive Guide book, $15. I have one of their gear driven fuel pumps and love it.

    Scott
  • bartibog1
    bartibog1 Expert Adviser
    does anyone no of resistor value and wattage to use existing relay on 12 volt for the overdrive relay

    steve
  • Park_W
    Park_W Senior Contributor
    For the '50 and later cars, Fifth Ave's headlight relay will do the job for quite a bit less money, unless you want something that looks similar to the original. As for a resistor for the solenoid, that's a tough one unless you have a '49 and earlier solenoid. Problem is the later solenoid has the high-current "pull-in" coil and the lower-current "hold-in" coil connected to the same terminal. A set of contacts in the solenoid disconnects the pull-in coil once it's done its job. So if you size a resistor to drop 6v when the pull-in coil is active, it'll have hardly any effect on the hold-in coil, so the latter will still be receiving most of the 12v. If you size the resistor to drop 6v when only the hold-in coil is operating, then when the pull-in coil is trying to do its job, the resistor will drop way too much voltage, and the pull-in won't (pull in!). I've worked this problem by using the '48-'49 solenoid, which has separate connections for the pull-in and hold-in coils. One can also search around for a solenoid from on a 12v OD equipped car. I've got a Studebaker 12v solenoid on my Hornet.
  • Nevada Hudson
    Nevada Hudson Senior Contributor
    Try Bill Albright,or Al Saffrahn. They both probally have what you need.
  • bartibog1
    bartibog1 Expert Adviser
    i have a 12 volt solenoid from a ford that works fine but need to address the relay which is 6 volt or find a suitable 12 volt one or a suitable replacement but trying to look original..
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