CT 70 Brake light fussy has me scratching my head

5

52brezelfenster

New Member

• Apr 14, 2020

• #1

Happy Tuesday,

My 1970 CT 70 brake light is doing something strange.

In key position 1, works perfect. Comes on and off like it should.

In key position 2 with headlight on, taillight lights up as running light, perfect so far.

Press rear brake lever, taillight goes off. No brake light.

Tried a different bulb no change. I'm sure the battery is really low. I'm doing the tests above with the bike running.

Any suggestions?

Thank you,
Dustin

 

OLD CT

Well-Known Member

• Apr 14, 2020

• #2

You need a good battery to have a properly functioning tail light. Surprised you didn't blow the headlight bulb yet. The bike needs a good battery to keep the bulbs from popping. Pick up a 6 volt 4AH sealed lead acid battery off ebay for 12.89 shipped.

 

5

52brezelfenster

New Member

• Apr 14, 2020

• #3

Thanks a bunch OLD CT, easy enough! I'll get a battery on the way.

I'm guessing it's safe to say the brake light switch is good since the brake does come on in ignition position 1?

Dustin

 

L

lukelaw1

Active Member

• Apr 14, 2020

• #4

Make sure you have a 6 volt bulb 1154 I think 1157 is a 12 volt

 

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bob66542

Member

• Apr 29, 2020

• #5

OLD CT said:

You need a good battery to have a properly functioning tail light. Surprised you didn't blow the headlight bulb yet. The bike needs a good battery to keep the bulbs from popping. Pick up a 6 volt 4AH sealed lead acid battery off ebay for 12.89 shipped.

Click to expand...

I went to eBay searched 6v 4ah and it showed an emergency light battery for 12. 89- this will work ok?

 

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allenp42

Well-Known Member

• Apr 29, 2020

• #6

Here's the battery I always buy. Even if you don't use Amazon, it should give you the info you need to purchase on e-Bay or elsewhere.

https://www.amazon.com/gp/product/B0002ILK4K/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

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bob66542

Member

• Apr 30, 2020

• #7

Thanks! I would have never thought of using this type of battery, for fear of the bike overcharging it and creating possible problems.

 

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bob66542

Member

• Apr 30, 2020

• #8

what kind of life are you seeing using this type battery?

 

OLD CT

Well-Known Member

• Apr 30, 2020

• #9

I have a solid 6 years of use with this type of battery. You would be lucky to get one year from a acid leaker.

 

cjpayne

Well-Known Member

• May 1, 2020

• #10

Those batteries are in the sporting goods section at Walmart for about 8 bucks the last time I saw.

 

cjpayne

Well-Known Member

• May 1, 2020

• #11

OLD CT said:

I have a solid 6 years of use with this type of battery. You would be lucky to get one year from a acid leaker.

Click to expand...

Aint that the truth?!!!. I even had one that froze and busted itself open.lol

 

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bob66542

Member

• May 2, 2020

• #12

I will try one-for those prices, what have I got to lose? Is that type of battery avail. as a 12v, and I wonder if one could be used on my old kick start only Triumph?

 

6

69ST

Well-Known Member

• May 2, 2020

• #13

OLD CT said:

I have a solid 6 years of use with this type of battery. You would be lucky to get one year from a acid leaker.

Click to expand...

First SLA battery I purchased went in the bike in 2003...didn't have to be replaced until 2017...13 riding seasons and 24,000 miles later. Never so much as gave it a top-off charge over winter.