Re: 37 120 should a 6v relay be used for original headlights
Posted by HH56 On 2017/5/18 19:02:56
Quote:
You could if you wanted to but I don't recall anyone mentioning they had done so. The amperage needed depends on how many accessories you have and how many are on at the same time. With a radio, heater, defroster, headlights and ignition all going at the same time worst case would be under 50 amps so for a fudge margin maybe go with a 60 amp fuse.
IMO, far more benefit would be gained by adding a quality main disconnect switch in the battery cable so you can kill all power when the car is parked or is long time unattended. Ideally it would be in the ground cable but since that is entirely under the car for 37 a switch in the hot side is the next best option. There have been some who mounted them on a bracket on the firewall a few inches away from the starter. Others have mostly hidden theirs by placing it in the floor near the battery just under the front edge of the seat so the lever could still be reached easily.
If you use a disconnect switch get a good one rated for 6v and capable of carrying several hundred amps continuous to allow for the heavy draw of the starter. Cole Hersee makes excellent switches available in many stores and some sold by Jegs (which may be private label Cole Hersee) have good ratings. Here is a Jegs offering with an appropriate capacity rating. Summit and Jegs has other good ones made by various mfgs.
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livingood wrote:
Would you put a maxi fuse in line from starter to ammeter and if so what size fuse
You could if you wanted to but I don't recall anyone mentioning they had done so. The amperage needed depends on how many accessories you have and how many are on at the same time. With a radio, heater, defroster, headlights and ignition all going at the same time worst case would be under 50 amps so for a fudge margin maybe go with a 60 amp fuse.
IMO, far more benefit would be gained by adding a quality main disconnect switch in the battery cable so you can kill all power when the car is parked or is long time unattended. Ideally it would be in the ground cable but since that is entirely under the car for 37 a switch in the hot side is the next best option. There have been some who mounted them on a bracket on the firewall a few inches away from the starter. Others have mostly hidden theirs by placing it in the floor near the battery just under the front edge of the seat so the lever could still be reached easily.
If you use a disconnect switch get a good one rated for 6v and capable of carrying several hundred amps continuous to allow for the heavy draw of the starter. Cole Hersee makes excellent switches available in many stores and some sold by Jegs (which may be private label Cole Hersee) have good ratings. Here is a Jegs offering with an appropriate capacity rating. Summit and Jegs has other good ones made by various mfgs.
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